The problem is to solve the quadratic equation $10x^2 = -19x + 15$ for $x$.

AlgebraQuadratic EquationsQuadratic FormulaAlgebraic ManipulationSolving Equations
2025/5/29

1. Problem Description

The problem is to solve the quadratic equation 10x2=19x+1510x^2 = -19x + 15 for xx.

2. Solution Steps

First, we rewrite the equation in the standard quadratic form ax2+bx+c=0ax^2 + bx + c = 0:
10x2=19x+1510x^2 = -19x + 15
10x2+19x15=010x^2 + 19x - 15 = 0
Now, we can solve for xx using the quadratic formula:
x=b±b24ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}
where a=10a = 10, b=19b = 19, and c=15c = -15.
Plugging in the values, we have:
x=19±1924(10)(15)2(10)x = \frac{-19 \pm \sqrt{19^2 - 4(10)(-15)}}{2(10)}
x=19±361+60020x = \frac{-19 \pm \sqrt{361 + 600}}{20}
x=19±96120x = \frac{-19 \pm \sqrt{961}}{20}
x=19±3120x = \frac{-19 \pm 31}{20}
So we have two possible solutions:
x1=19+3120=1220=35x_1 = \frac{-19 + 31}{20} = \frac{12}{20} = \frac{3}{5}
x2=193120=5020=52x_2 = \frac{-19 - 31}{20} = \frac{-50}{20} = -\frac{5}{2}

3. Final Answer

The solutions are x=35x = \frac{3}{5} and x=52x = -\frac{5}{2}.

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