X^2-3x-40

In this question, you need to split -3 in such a way that the numbers add up to form -3 and Multiply to form -40, Here -40 is Product of 1 from X

X

Let X

X

X(X-8)+5(X-8)=0

(X+5)(X+8)=0

Now, X+5=0 AND X-8=0

X= -5 AND X=8

X=(-5,8)

In this question, you need to split -3 in such a way that the numbers add up to form -3 and Multiply to form -40, Here -40 is Product of 1 from X

^{2}AND -40]X

^{2}-3x-40Let X

^{2}-3x-40=0X

^{2}-8x+5x-40=0 [Making -3 Split as mentioned above]X(X-8)+5(X-8)=0

(X+5)(X+8)=0

Now, X+5=0 AND X-8=0

X= -5 AND X=8

X=(-5,8)