​ If 49a^2 - b = (7a + 1/2)(7a - 1/2), then the value of b is A. 0 B. C. D. ​

Question

If 49a² - b = \((7a+\frac{1}{2})(7a-\frac{1}{2})\), then the value of b is

A. 0

B. \(\frac{1}{4}\)

C. \(\frac{1}{\sqrt2}\)

D. \(\frac{1}{2}\)

Answer 1

Given: 49a² - b = \((7a+\frac{1}{2})(7a-\frac{1}{2})\)