Question

factorise {9}x^{3} - {27}x^{2} - 100x + 300 if it is given that(3x + 10) is a factor of it.

Answer 1

Answer:(3x-10)(x-3)(3x+10)

Step-by-step explanation:

By doing long division you'll get the quotient as 3x square - 19 x+ 30

Now do middle term factorisation..You'll get (3x-10)(x-3)

Now the factors are (3x-10)(3x+10)(x-3)