50 degrees
180 degrees
130 degrees
130 degrees
2a-6+5a=8a-8
7a-6=8a-8
7a=8a-2
-1a=-2
a=2
(r+1)th term of (a +x)^n = nCr a^(n-r)x^r
so 5th term of (3x - 3y)^7 = 7C4 * (3x)^(7-4) (-3y)^4 (NOTE r = 4)
= 35 * 27x^3 * 81y^4
= 76545 x^4y^3
The correct answer is 12.25
G(f(x))= (7x+8)^4
g(f(x))= (7(0)+8)^4
=(0+8)^4
=8^4
=8•8•8•8
=4,096
