Question

find the roots of the quadratic equation X2 +7x+12=0 by factorisation method​

Answer 1

Answer:

Solution:

a=1,b=+7,c=+12

x=2a−b±b2−4ac

x=2×1−(+7)±72−4×1×12

x=2−7±49−48

x=2−7±1

x=2−7+1 or  x=2−7−1

x=−3 or x=−4

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