Question

please guys jitna bhi aaye send kar do very urgent and properly answer​

Answer 1

1

a)3x-4x+11x-2x

= 3x+11x-4x-2x

= 14x-6x= 8x

b) $- x^2+7x^2-3x+7x^3-5x \\\\ =7x^3+7x^2-x^2-3x-5x \\\\ =7x^3+6x^2-8x$

c) 7a-5b-ab-(2a-3b+ab)+3ab-b+a

= 7a-5b-ab-2a+3b-ab+3ab-b+a

= 7a-2a+a-5b+3b-b-ab-ab+3ab

= 6a-3b-2ab+3ab

= 6a-3b+ab

d)$(2x^2+3y-5)(4-x-x^2) \\\\ =8x^2-2x^3-2x^4+12y-3xy-3x^2y-20+5x+5x^2 \\\\ = 13x^2-2x^3-2x^4-3xy-3x^2y+5x-3xy-20$