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Solve the equation 
2x^(2)+8x-10=-3x^(2) to the nearest tenth.
Answer: 
x=

Solve the equation 2x2+8x10=3x2 2 x^{2}+8 x-10=-3 x^{2} to the nearest tenth.\newlineAnswer: x= x=

Full solution

Q. Solve the equation 2x2+8x10=3x2 2 x^{2}+8 x-10=-3 x^{2} to the nearest tenth.\newlineAnswer: x= x=
  1. Move Terms to One Side: First, we need to move all terms to one side of the equation to set it equal to zero. We do this by adding 3x23x^2 to both sides of the equation.\newline2x2+8x10+3x2=3x2+3x22x^2 + 8x - 10 + 3x^2 = -3x^2 + 3x^2\newlineThis simplifies to:\newline5x2+8x10=05x^2 + 8x - 10 = 0
  2. Solve Quadratic Equation: Next, we need to solve the quadratic equation. We can do this by using the quadratic formula, which is x=b±b24ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}, where a=5a = 5, b=8b = 8, and c=10c = -10.
  3. Calculate Discriminant: Now we calculate the discriminant, which is the part under the square root in the quadratic formula: b24acb^2 - 4ac.\newlineDiscriminant = 824(5)(10)8^2 - 4(5)(-10)\newlineDiscriminant = 64+20064 + 200\newlineDiscriminant = 264264
  4. Find Real Solutions: Since the discriminant is positive, we have two real solutions. We will use the quadratic formula to find both.\newlinex=8±2642×5x = \frac{-8 \pm \sqrt{264}}{2 \times 5}\newlinex=8±26410x = \frac{-8 \pm \sqrt{264}}{10}
  5. Simplify Square Root: We simplify the square root of 264264 to get an approximate decimal value for the square root.\newline26416.2\sqrt{264} \approx 16.2 (rounded to one decimal place)
  6. Substitute and Solve: Now we substitute the approximate value of the square root back into the quadratic formula to find the two solutions.\newlinex=8+16.210x = \frac{{-8 + 16.2}}{{10}} and x=816.210x = \frac{{-8 - 16.2}}{{10}}\newlinex0.82x \approx 0.82 and x2.42x \approx -2.42 (rounded to the nearest tenth)

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