Question

(-5x^2+12)/4. When x=-3

Answer 1

8.25

Explanation:

exponents then multiply/divide then add/subtraction & of course if it is in *parentheses*, its first (and always go fro left to right)

(-5*(-3^2)+12)/4

exponents: -3^2=-3*-3=9

and then multiply -5*9=-45

then add -45+12=33

and then because of the parentheses, *now* divide 33/4=8.25

Answer 2

Explanation:

(-5x^2+12)/4. When x=-3

= {-5(-3)^2 +12}/4

= (-5(9) +12)/4

= (-45 +12)/4

= -33/4

= -8 1/4