Find the value of the quadratic expression $3x^2$3x2 for each of the following $x$x-values.

a

$x=5$x=5

b

$x=-5$x=−5

Easy

Approx a minute

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Find the value of the following quadratic expression when $x=1$x=1.

$3x^2+1$3x2+1

Find the value of the following quadratic expression when $x=7$x=7.

$4x+5x^2$4x+5x2

Find the value of the following quadratic expression when $x=8$x=8.

$6x^2+5x-4$6x2+5x−4

Outcomes

10P.QR2.02

Determine, through investigation using technology, that a quadratic relation of the form y = ax^2 + bx + c (a ≠ 0) can be graphically represented as a parabola, and determine that the table of values yields a constant second difference