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By using the quadratic equation formula: (4x+1)(x-3) = 0
For any quadratic ax2 + bx + c = 0 we can find x by using the quadratic formulae: the quadratic formula is... [-b +- sqrt(b2 - 4(a)(c)) ] / 2a
Well, if the given quadratic equation cannot be factored, nor completed by the square, try using the quadratic formula.
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The answer of the equation 2a -46a plus 252 = 0 using the quadratic formula is a = 5.25.