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Direction: Solve the following quadratic equations by extracting square roots.

1. x² = 16
2. 2x² = 8
3. x² - 1 = 0
4. x² - 45 = 0
5. x² = 64/81
6. x² - 100 = 0
7. (x² - 4) = 169
8. 4x² - 225 = 0
9. 2x² = 50
10. x² = 81


yung matinong answer sana.​

Sagot :

Answer:

1. x²=16

x² -16=0

(x+4) (x-4)=0

x+4=0 or x-4=0

x= -4 or x=4

Answer:x = -4 or x=4

2. 2x²=8

x²=8/2

x²=4

x=√4 or x = -√4

x=2 or x= -2

Answer: x=2 or x= -2

3. x²-1=10

x²=10+1

x²=11

x=√11 or x= -√11

Answer: x=√11 or -√11

4. x²-45=0

x²=45

x=√45 or x-√45

x=3√5 or x-3√5

Answer: x=3√5 or x-3√5

5. x=64/81

x=-√64/81

or

x=√64/81

x=8/9 or x=-8/9

Answer: x=8/9 or =x-8/9

Step-by-step explanation:

i hope it's help po