Answered


ײ-8×-9=0 quadratic equation
find the solution ​

Sagot :

ROBERTARIZAPA25GO

Answer:

x=9

x=-1

Step-by-step explanation:

1.x²-8x-9=0

2.(x-4)²-9-4²=0

3.(x-4)²=9+4²

4.(x-4)²=9+4²

5.(x-4)²=9+16

6.(x-4)²=25

7.x-4=¥√25

8.x=¥15+4

9.x=4+5

x=4-5

10.x=9

x=4-5

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