What is the value of (j+3k)(5)?
j(x) = (x + 4)^2; k(x) = 8 - x
(j + 3k)(5) =
1 answer:
Step-by-step explanation:
J=(x+4)²
K=(8-x)
X=5
=J+3k
=(x+4)(x+4)+3(8-x)
=(x²+8x+16+24-3x)
=25+25+40
=90
Alternatively:
J=(5+4)²
J=81
K=8-5
K=3
J+3k
81+3(3)
81+9
90
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