₦airaland Forum

parkparky:
1. X*Y=X^Y(X power y). Find X if X*2=12-X.
2. If M*N=N-(M+2). find 3*(-5)
3..find m*n=m+n+mn.find the inverse of 5.if the identity element is 0
4.x*y=x2-y2/2xy find -5*3.
5.If a*b=ab+2(a+b+1). Find the identity element

ShyNeptune:
Parkparky

mathefaro:
For inverse and identity elements in binary operation,

e = identity element
a' = inverse of a

For any operation,
a * e = a and a * a' = e

For instance, in addition operation, the identity element e = 0(zero) since
a + 0 = a (no other number can replace 0 here giving us the same result, a)
While the inverse of a is -a since a + (-a) = 0.

Check the attached picture for #3 and #5

parkparky:
dnt disturb me, am solving maths

parkparky:
chai c me c maths..tanx sir

seuntosyn:
Help solve this log1.728 base1.2

seuntosyn:
Help solve this log1.728 base1.2

Geofavor:
The sum of the first two terms of a G.P is 28, but the sum of the third and fourth terms is 252. Find the second term of the G.P if the seventh term is 5103.

Shyneptune, thankyoujesus, mathefaro, oxytocin, tobie

Geofavor:
If the maximum value of y = 1 + hx - 3x² is 13, find h.

Geofavor:
Factorise 2y² - 15xy - 18x²

Geofavor:
If the end point of one side of square RSTU are R(-1, -1) and (3, -1) find the area of the square.

Mathefaro, umartins1, thankyoujesus, oxytocin etc.

ShyNeptune:
area is 16

Geofavor:
36

Geofavor:
Factorise 2y² - 15xy - 18x²

ShyNeptune:
ooppppz. ... what's the size of one side of the square?

thankyouJesus:
2y^2 - 12xy -3xy - 18x^2 (you should be able to continue but, check the question, - or + 18?)

Geofavor:
Lols. Not given

thankyouJesus:
2y^2 - 12xy -3xy - 18x^2 (you should be able to continue but, check the question, - or + 18?)

Geofavor:
i think it was a typo. It should be +.

Wow, so quick and straight forward. I've used 5 pages in solving this thing .

ShyNeptune:
no. I mean from your solution....