Solve using the quadratic formula.7v2+2v−7=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.v=_____ or v=_____
Q. Solve using the quadratic formula.7v2+2v−7=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.v=_____ or v=_____
Identify coefficients: Identify the coefficients a, b, and c in the quadratic equation7v2+2v−7=0. Comparing 7v2+2v−7=0 with the standard form ax2+bx+c=0, we find: a=7b=2c=−7
Substitute values into formula: Substitute the values of a, b, and c into the quadratic formula, v=2a−b±b2−4ac. The quadratic formula is v=2⋅7−2±22−4⋅7⋅(−7).
Calculate discriminant: Simplify the expression under the square root, known as the discriminant. Calculate the discriminant: 22−4⋅7⋅(−7)=4+196=200.
Substitute discriminant into formula: Substitute the discriminant back into the quadratic formula.Now we have v=14−2±200.
Simplify square root: Simplify the square root of the discriminant. 200 can be simplified to 102 because 200=100×2 and 100=10. So, v=14−2±102.
Divide by common factor: Simplify the expression by dividing all terms by the common factor if possible.In this case, there is no common factor for all terms, so we proceed with v=14−2±102.
Calculate possible solutions: Calculate the two possible solutions for v.First solution: v=14−2+102Second solution: v=14−2−102
Round values if required: Round the values of v to the nearest hundredth, if required.First solution: v≈(−2+14.14)/14≈12.14/14≈0.87Second solution: v≈(−2−14.14)/14≈−16.14/14≈−1.15
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