Question

Solve the following by factorisation method
q2 +q - 12 = 0
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Answer 1

Answer:

q²+q-12=0

q²+4q-3q-12=0

(q²+4q)-(3q-12)=0

q(q+4)-3(q+4)=0

(q+4)(q-3)=0

Answer 2

q²+q-12=0

On middle splitting,

q²+4q-3q-12=0

Now by taking common,

q(q+4)- 3(q+4)=0

(q-3) (q+4)=0

Now, On equating equation from 0,

q= 3, -4