Question

simplify (3x-4) (3x+4) + (5x+4) (x-2)​

Answer 1

Step-by-step explanation:

3x²-16+x(5x+4)-2(5x+4)

3x²-16+5x²+4x-10x-8

3x²+5x²+4x-10x-8-16

8x²-6x-24

Answer 2

Answer:

14x²+4x-34

Step-by-step explanation:

3x(3x+4)-4(3x+4) + 5x(x-2)+4(x-2)

=9x²+12x-12x-16+5x²-10+4x-8

=14x²+4x-34