The Student Room Group

Completing the Square

X2 x-7=(x a)2 bif a = 1what is b?
I don't know what the equation is supposed to be. Can u attach a photo or something
Original post by dj yuki
X2 x-7=(x a)2 bif a = 1what is b?


Replace a by 1 then expand and compare coefficients between both sides.

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