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fatherbamboo
31.07.2019 •
Mathematics
Which equation has the same solutions as x² + 6x - 7 = 0?
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Ответ:
(x+3)²=16
Step-by-step explanation:
I'm gonna solve this equation by completing the square
x²+6x-7 = 0 by Completing The Square
Add 7 to both side of the equation :
x²+6x = 7
Now you take the coefficient of x , which is 6 , divide it by two = 3 , and finally square it giving 9
Add 9 to both sides of the equation :
x²+6x+9=7+9
(x+3)x(x+3)=(x+3)²
7+9=16
| (x+3)²=16 |
Now you square root both sides to get x+3=±4
x+3=+4 or x+3=-4
x+3=+4= -7
x+3=-4= 1
x= -7
x= 1
Hope this helps! Have an amazing day :)
Ответ:
Answer
I rly dont know bbut 76
Step-by-step explanation:
76 is the answer ur welcome