qtatn
qtatn
27-07-2016
Mathematics
contestada
Evaluate the expression. -x^2 -4x: x =. -3
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dasetka
dasetka
27-07-2016
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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