Question

any one prove quadratic formula t ? x
$\frac{ - b + - \sqrt{b {}^{2} - 4ac} }{2a}$
​

Answer 1

Answer:

First, just try it. Then we will do some more work with it. Take the equation 2x2 + 7x + 6 = 0.

__________

x = -7±√72 - 4(2)(6)

2(2)

x = -7 ± √1

4

x = -8/4 = -2 OR x = -6/4 = -1.5

Try x2 - 2x + 4 = 0.

___________

x = -(-2)±√(-2)2 - 4(1)(4)

2(1)

___

x = 4±√-12

2

Answer 2

Answer:

Answer is in the attachment

Step-by-step explanation:

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