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Simplify the following expressions and then find the numerical values for x = -2.
3(2x – 4) + x 2 + 5


Sagot :

Step-by-step explanation:

for the given value x = -2

= 3(2x-4) + x^2 +5

= 3(-4 -4) +4+5

= -24+9

= -15