Math, asked by X28x90, 1 year ago

X square + 8 x + 9 is equal to zero answer

Answers

Answered by FayasKhan
0
x^2 +2*2*2+4=9+4
(x+2)^2=13
x+2=√13

x+-√13-2
Answered by Anonymous
0
Hi friend,

Here is your answer,
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x² + 8x + 9 = 0

x = -b⁺₋ √(b²-4ac) 
               2a

x = -8 + √{(8)² - 4*1*9}                     x = -8 - √{(8)² - 4*1*9}
                2*1                                                  2*1

x = -8 + √{64 - 36}                            x = -8 -√{64 - 36}
              2                                                     2

x = -8 + √28                                     x = -8 -√28
           2                                                    2
 
x = -4 + √7                                        x = -4 - √7

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