Question

What is the product of? (7x^2)(2x^3+5)(x^2-4x-9)

Answer 1

$(7x^{2})(2x^{3} +5)( x^{2} -4x-9)$
$(14 x^{5} +35 x^{2})( x^{2} -4x-9)$
=$14 x^{7} -56 x^{6}-126 x^{5}+35 x^{4}-140 x^{3}-315 x^{2}$

Answer 2

Answer:

$14x^7 -56x^6-126x^5+35x^4-140x^3-315x^2$

Step-by-step explanation:

(7x^2)(2x^3+5)(x^2-4x-9)

Find the product of $(7x^2)(2x^3+5)(x^2-4x-9)$

Multiply the parenthesis

$(7x^2)(2x^3+5)=14x^5+35x^2$

Now we multiply 14x^5+35x^2 inside last parenthesis

$( 14x^5+35x^2)(x^2-4x-9)$

$14x^7 -56x^6-126x^5+35x^4-140x^3-315x^2$

Combine like terms if any

$14x^7 -56x^6-126x^5+35x^4-140x^3-315x^2$