How do you solve (a+5)^2=25 using quadratics
2 answers:
Answer:
a = 0 ; a = -10
Step-by-step explanation:
a squared number give as result a positive number, either if it is positive or negative
we have to find two numbers whose square is 25: these numbers are 5 and -5
a+5 = 5
a = 0
a+5 = -5
a = -10
Answer:
(a+5)^2=25 means a^2+5^2=25, a^2=25-25 then a^2=√0, a=0
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Two cheaper books = x
more expensive = 1.5x
so, 2.5x=150
150/2.5=x=60
therefore the more expensive book = 90
Subtract 17from both sides
32-17=x
Simplify 32-17 to 15
X=15
