Quadratic Equations

NZ Level 7 (NZC) Level 2 (NCEA)

Solving by completing the square II

How can we find the number to add to $x^2-5x$`x`2−5`x` to make a perfect square trinomial?

Halve the coefficient of $x$`x`.

A

Square the coefficient of $x^2$`x`2.

B

Halve the coefficient of $x$`x` and then square it.

C

Square the coefficient of $x$`x`.

D

Halve the coefficient of $x$`x`.

A

Square the coefficient of $x^2$`x`2.

B

Halve the coefficient of $x$`x` and then square it.

C

Square the coefficient of $x$`x`.

D

Easy

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Form and use linear, quadratic, and simple trigonometric equations

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