Question

If 49x^2-b^2= (7x+1/2)(7x-1/2),then b=

Answer 1

Step-by-step explanation:

49x^2-b=[7x+1/2][7x-1/2]

=49x^2-b=[7x-1/2]^2 =[49x^2-1/4] -b=49x^2-1/4-49x^2 b=1/4

4.4

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