Question

plssss e urgent! multumesc

Answer 1

2(x+4) +3(3x-7)=> 2x+8+3x(-21)=> 2x+8-63=>2x-55

3(5+x)-2(2x-3)=> 15+3x-2x(-6)=> 15+3x+12=> 27+3x

(4-3x)(3 x 2x)=> (4-3x) x (6x)=> (4-3x) x 6x=> 24x-18x²

(2x-3)(2x+3)=> (2x)² - 3²=> 4x²- 9

(6x-5) (6x+5)=> (6x)² - 5²=> 36x² - 25

(2x+6) (2x-6)=> (2x)²- 6²=> 4x² - 36

(x+1)(x-1) + (x-2)(x+2)=> x² -1 + x² - 4=> 2x² - 5