Question

factorise: 3x^2-x-10

Answer 1

Answer:

For a polynomial of the form

ax2+bx+c

, rewrite the middle term as a sum of two terms whose product is

a

⋅

c=3⋅−10=−30

and whose sum is

b=−1

.

Tap for more steps...

3x2−6+5x−10

Factor out the greatest common factor from each group.

Tap for more steps...3x(x−2)+5(x−2)

Factor the polynomial by factoring out the greatest common factor,x−2.(x−2)(3x+5)

Answer 2

Step-by-step explanation:

Factorising by splitting the middle term:

3x^2-x-10

Sum=–1

Product=–30

3x^2-6x+5x-10 (Spliting the middle term)

3x(x-2) +5(x-2) (Taking out the common factor)

(3x+5)(x-2)