Mathematics, 05.06.2020 01:57 trying1to1pass
A) the quadratic x^2-4x-21 can be written in the form (x+a)^2+b find the values of and and b b) hence, or otherwise, solve the equation x^2-4x-21=0
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A) the quadratic x^2-4x-21 can be written in the form (x+a)^2+b find the values of and and b
b) hen...
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