₦airaland Forum

What's the value of x?

nlfpmod pls come solve this simple equation!!!

ManirBK:
What's the value of x?

It is a Surd question.

Solution steps below
Rtx + Rtx=2Rtx (LHS)
Rt8 = Rt4 times Rt 2 (RHS)

Therefore 2Rtx=2Rt2 (because Rt4=2)
Divide both LHS and RHS by 2
Therefore Rtx= Rt2
Therefore x=2
Option a is the answer
N.B Rt= Square root

Check my signature for free stuffs!

FreeStuffsNG:
2Rtx=Rt8 Rt8= Rt4 times Rt 2 Therefore 2Rtx=2Rt2 (because Rt4=2) Divide both places by 2 Therefore Rtx= Rt2 Therefore x=2 Rt= Square root

chai!!!

This na elementary surds na
X = 2

√2 + √2 = 2√2 = √(2² x 2) = √8.

NwaNimo1:
Square everything.......

then: x+x=8; 2x=8; therefore x=4

https://storage.ko-fi.com/cdn/useruploads/display/e7c9062a-8179-47e7-9e7e-5370e938f1b1_21.gif

oh! me self no know the answer so weting i go carry x= 2 or x=4

Treadway:
This na elementary surds na
X = 2

√2 + √2 = 2√2 = √(2² x 2) = √8.

But

root x + root x =2root x

Abi?

The Answer is not there, the answer in Surd Form is 2√2 simplified

Hezzyluv:
But

root x + root x =2root x

Abi?

yes 2√x but it doesn't end there
You further simplify the surd 2√2 but raising both 2 and √2 to power 2, giving you 2x2 which is 4 and √2×√2 which is 2, all in square root, giving you √8

Punch √8 on a calc and note the figure, then do 2 multiplied by the value of √2, you'll see you will get the same answer/figure for both.

Not a mathematics(pure or physical science) student but...

√X + √X = √8

X^½ + X^½= 8^½

(note "^" is symbol for "raised to the power of"...)

2(X^½) = 8^½

X^½= (8^½)/(2)

X= (8^½)²/(2)²

X=8/4

X=2

I feel a little bit embarrassed forgetting how to use Surds form. Assume this to be method 2

At least, to God be the glory I arrived at an answer.

There's no way I will give you the value of × because my x has no value.

X is there nau
Look at it there

COMRADES, we left secondary school over 15 years ago. So count us out

j

57,000

Abeg, make una carry Yeye surds comot joor.

Na Money gangan we need no be mathematics joor.
How many Maths Fubara know abi Wike abi Sanwo abi PBAT?

I need money no be Surd abi Maths.

ManirBK:
What's the value of x?

Too simple..change the square roots of X's to indices. Change the share root of 8 to indices..That alone and you are 90% done.

ManirBK:
What's the value of x?

Easily A

Bleep and Fvvck mathematics

🤔

Was this meant to be challenging?

This is not how mathematics works. Dont mock mathematics, it is one of the best disciplines.

Hello sir,

The question is not correct

FreeStuffsNG:
2Rtx=Rt8
Rt8= Rt4 times Rt 2
Therefore 2Rtx=2Rt2 (because Rt4=2)
Divide both places by 2
Therefore Rtx= Rt2
Therefore x=2
Option a is the answer
Rt= Square root

X = 4

sqrt x + sqrt x = sqrt 8
sqrt 2x = sqrt 8
square both side to remove the sqrt
2x = 8
divide both sides by 2
x = 4
prove
sqrt 4 (2) + sqrt (2) is sqrt 8 (4)

Thank God I never needed anything past simple arithmetics to make my way in the world.

3

Many years back when my secondary teacher said I was brilliant than most adults i see in work places, na because of this kind of question

See as dem go begin jam wall over this question

Amumaigwe:
Easily A

solve it pls