In the form ax² + c = 0 or a(x-b)² + c = 0, where a≠0
1) x² - 49 = 0
[tex] \sqrt{x ^{2} } = \sqrt{49} [/tex]
x = +7 or -7
2) y²-2 = 34
y² = 34 + 2
y² = 36
[tex] \sqrt{ y^{2} } = \sqrt{36} [/tex]
y = 6 or -5
3) (x-6)² = 64
[tex] \sqrt{(x-6) ^{2} } = \sqrt{64} [/tex]
x - 6 = 8
x = 8 + 6
x = 14
or
x = -8 + 6
x = -2