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Jay Marquez
Mathematics
10 September, 03:32
What is the answer to 2x squared + 7x+3=0
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Cash Ballard
10 September, 03:38
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2x² + 7x + 3 = 0
Multiply first and last coefficients: 2*3 = 6
We look for two numbers that multiply to give 6, and add to give 7
Those two numbers are 1 and 6.
Check: 6*1 = 6 6 + 1 = 7
We replace the middle term of + 7x in the quadratic expression with 1x + 6x
2x² + 7x + 3 = 0
2x² + 1x + 6x + 3 = 0
x (2x + 1) + 3 (2x + 1) = 0
(2x + 1) (x + 3) = 0
2x + 1 = 0 or x + 3 = 0
2x = 0 - 1 x = 0 - 3
2x = - 1 x = - 3
x = - 1/2
The solutions are x = - 1/2 or - 3.
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Marlene
10 September, 04:01
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2x^2 + 7x + 3 = 0
(2x + 1) (x + 3) = 0
2x+1 = 0 x + 3 = 0
2x = - 1 x = - 3
x = - 1/2
x = - 1/2 and - 1
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