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Factories
Posted by Rajesh on June 25, 2023 at 4:39 pmFactories x^2 + 7x -98
Padma replied 3 months, 1 week ago 2 Members · 1 Reply -
1 Reply
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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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