Question

X^2+x-15 factorise via middle term splitting method

Answer 1

Answer:

(x + 5)(x - 3)

Solution:

Here,

The given quadratic polynomial is ;

x² + 2x - 15 .

We need to factorize the given quadratic polynomial using middle term splitting method .

Thus,

Here we go ↓

=> x² + 2x - 15

=> x² + 5x - 3x - 15

=> x(x + 5) - 3(x + 5)

=> (x + 5)(x - 3)

Hence,

Required answer is ;

(x + 5)(x - 3)

Answer 2

Answer:

x=3,-5

Step-by-step explanation:

=x^2+x-15

=x^2+(5-3)x-15

=x^2+5x-3x-15

=x(x+5)-3(x+5)

=(x+5)(x-3)

So, we get our answer;

x=-5 & x=3

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