Answer:
34
Step-by-step explanation:
(4x+y)^2-3z for x=2,y=-1,and z=5
LET'S SUBSTITUTE.
(4(2)+(-1))^2-3(5)
TAKE NOTE OF THE SIGNS (-) (+).
=(8-1)^2 - 15
= (7)^2 - 15
SOLVE THE NUMBERS ASSOCIATED WITH THE BRACKETS FIRST.
= 49 - 15
= 34
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