Question

15. Multiply : 3x2 – x3 + x + 1 and 1 + x.​

Answer 1

Answer:

(5-3x+x+1 )(x+1)

(x+1)(5-2x+1)

x(5-2x+1)+1(5-2x+1)

5x-2x^2+x+5-2x+1

3x+x-2x^2+5+1

4x-2x^2+6

-2x^2+6x-2x+6

-2x(x-6)-2(x-6)

(-2x-2)(x-6)

I hope it will be helpful to u

Answer 2

$\huge\mathtt\pink{Answer}$

$(3x^{2} – x ^{3} + x + 1) ( 1 + x)$

$3x ^{2} + 3x^{3} - x^{3} - x ^{4} + x \: + x^{2} + 1 \: + x$

$3x^{2} + x^{2} - 3x^{3} - x ^{3} + x^{4} + x \: + x \: + 1$

$4x^{2} - 4x^{3} + x ^{4} + 2x \: + 1$

$\sf\green{hope \ it's \ helps \ you}$