If 49a2 − b = 7a+12 7a-12 , then the value of b is(a) 0(b) 14(c) 12( – InterviewSolution

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1.	If 49a2 − b = 7a+12 7a-12 , then the value of b is(a) 0(b) 14(c) 12(d) 12
Answer» If 49a² − b = $(7 a + \frac{1}{2}) (7 a - \frac{1}{2})$ , then the value of b is (a) 0 (b) $\frac{1}{4}$ (c) $\frac{1}{\sqrt{2}}$ (d) $\frac{1}{2}$

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