26-07-2016
Mathematics

Answered

Evaluate the expression. -x^2 -4x: x =. -3

Verified Answer :

dasetka dasetka

26-07-2016

Substitute the x-value into the expression and solve it.

-x^{2} - 4x Substitute all the x variables for 3
-3^{2} - 4(3) Use PEMDAS and start with the exponent (-3^{2} = -3 x -3 = 9)
9 - 4(3) Multiply
9 - 12 Subtract
-3

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