Answer:
80
Step-by-step explanation:
x³ + x²
4³ + 4²
64 + 16
Replace the variable x with 4 in the expression.
Raise 4 to the power of 3.
Raise 4 to the power of 2.
80 Add 64 and 16.
4x+7y
4(3/4) +7(-1/3)
3-7/3
=2/3
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