Question

Really need some help
1. 14x^2+4+3x-12x^2-3+11x
A) 2x^2+7x+1
B) 2x^2+14x+1
C) 2x^2+14x+7
D) 26x^2+7x+7

2. 4x^2+4-5x+x-2x^2+8
A) -2x^2+4x+12
B) -2x^2-4x+12
C) 2x^2+4x+12
D) 2x^2-4x+12

Answer 1

14 x^2 -12 x^2 = 2 x^2

3 x + 11 x = 14 x

4 - 3 = 1
so
2 x^2 + 14 x + 1

============================
4 x^2 - 2 x^2 = 2 x^2

-5 x + 1 x = - 4 x

+4 + 8 = 12

so what do you think ?

Answer 2

gather like terms..combine...simplify
2. x^2(4-2)+x(-5+1)+8+4
2x^2-4x+12

Answer 3

I struggle with polynomials a lot.

Answer 4

Anyone got the answers to the test?