Question

Y²-49/64=0
(y-7/8)(y+7/8)

Answer 1

y²-49/64=0

y²=49/64

y=+-√49/64

y=+-7/8

(y-7/8)(y+7/8)=0

y²+7/8y-7/8y-49/64=0

y²-49/64=0

y²=49/64

y=+-√49/64

y=+-7/8