solve for x.

Question

1.25x^2=13
2.2(x-5)^2=3

Answer 1

solve for x.
1.25x^2=13
2.2(x-5)^2=3

Answer 2

1)

divide both sides by 25, we get

x^2=13/25

take square root

x = +/- sqrt(13/25)

sqrt means square root. example: sqrt(5) means square root of 5.

2)
The same kind of problem:

divide by 2 on both sides:

(x-5)^2 = 3/2

take square root:

x-5 = +/- sqrt(3/2)

add 5 on both sides:

answer x = 5+sqrt(3/2)

or x= 5-sqrt(3/2)

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