What is the correct evaluation of 4x2 + 4x - 2y2 +3y, when x is equal to -2 and y is equal to 3?
1 answer:
Answer:
-1
Step-by-step explanation:
This all comes down to the substitution. I am assuming that (4x2) is meant to be 4x^2 so I will solve as that.
4(-2)^2 = 4(4) = 16
4(-2) = - 8
-2(3)^2 = -2(9) = -18
3(3) = 9
16-8-18+9= -1
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Answer:
11.5
Step-by-step explanation
a^2+b^2=c^2
8(8)+(x)^2=196
64 + x^2=196
=
x=11.48
x=11.5 rounded
87 square units hope that this helped
E. Commutative property of multiplication
Answer: D for the first one and B for the second
Step-by-step explanation: