Question

Give exact and approximate solutions to three decimal places.
(x-8)^2=49
I need step by step example on how to solve this AND input it into a calculator. Please!

Answer 1

You should not need a calculator for this. Use your head.
Take the square root of both sides.

x - 8 equals +7 or -7.

x = 15 or 1.

Answer 2

Give exact and approximate solutions to three decimal places.
y^2-6y+9=25


x^2+5x-7=0