X^2+7x-98 = 0<div>

We spilt the x coefficient 7 in to two parts 14 and -7.

If we add the two part 14 – 7 , we get 7 coefficient of x.

if we multiply 14 × 7 , we get the constant term 98 .

We write the equation,

x^2+14x-7x-98=0

We take common elements,

x(x+14)-7(x+14)=0

(x+14)(x-7)=0

x+14=0 and x-7=0

x =-14 and x=7

x= -14,7

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