WAEC - Mathematics (2022 - No. 16)
What value of p will make (x\(^2\) - 4x + p) a perfect square?
-2
16
4
-8
คำอธิบาย
(x\(^2\) - 4x + p)
Use the coefficient of the middle variable(-4x)
= (\(\frac{-4}{2}\))\(^2\)
= (-2)\(^2\)
= 4
(x\(^2\) - 4x + p)
Use the coefficient of the middle variable(-4x)
= (\(\frac{-4}{2}\))\(^2\)
= (-2)\(^2\)
= 4