CPM Homework Help : CCA2 Problem 7-98

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7-98.

Solve each of the following equations.

$2(x−1)^2=18$
Step 1(a):
Divide both sides by 2.
How many solutions are you expecting?

$2^x+3=10$
Step 1(b):
Subtract 3 from both sides.
$2^x=7$
Step 2(b):
log(2)^x = log(7)
Take the log of both sides.
Step 3(b):
Apply the Power Property of Logarithms.
$x·\log(2)=\log(7)$

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