Question

A. Solves each equation by extracting square root.

1.) x² = 16
2.) x² = 49
3.) x² = 128
4.) x² = 108
5.) x² = 121
6.) x²-169 = 0
7.) x²-80=0
8.) x²-63=0
9.) 5x2 – 125 = 0
10.) 3x²-132-0​

Answer 1

1,2,5 square root both sides

1. 4
2. 7
3. simplify into 8 root 2
4. simplify into 6 root 3
5. 11
6. add 169 to both sides and square root to get 13
7. add 80 to both sides and simplify into 4 root 5
8. add 63 to both sides and simplify into 3 root 7
9. add 125 to both sides, divide both sides by 5, x^2=25, square root, x=5
10. add 132 to both sides, divide by 3, x^2=44, square root simplified is 2 root 11