Question

I need help on these problems: Using the square root property:
8x^2 + 5 = 805
(4x +2)^2 =36
5(x-9)^2 =30
(x-6)^2 =16

Answer 1

for the 1st one

subtract 5 from both sides

divide both sides by 8

take the square root of both sides

and you'll have the 1 answer

there are 2 actual answers, the positive and negative

as a positive squared and a negative squared have the same value.

Answer 2

ok so that one is 10,-10 how would I do the ones with the ( ) ?

Answer 3

thats correct...



take the square root... use positive and negative answer subtract 2 and divide by 4

3rd divide 5 take the square root... positive and negative radical then add 9



4th 2 answers take square root.... positive and negative add 6

Answer 4

ty so much