Solve using the quadratic formula.2d2+9d−5=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.d=_____ or d=_____
Q. Solve using the quadratic formula.2d2+9d−5=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.d=_____ or d=_____
Identify values: Identify values of a, b, and c from the equation 2d2+9d−5=0. Here, a=2, b=9, and c=−5.
Plug into quadratic formula: Plug a, b, and c into the quadratic formula: d=2a−b±b2−4ac. So, d=2(2)−(9)±(9)2−4(2)(−5).
Simplify square root: Simplify inside the square root: (9)2−4(2)(−5)=81+40=121.
Calculate square root: Calculate the square root: 121=11.
Substitute back into formula: Now, substitute the square root back into the formula: d=4−9±11.
Find possible solutions: Find the two possible solutions for d: d=4−9+11 or d=4−9−11.
Simplify both solutions: Simplify both solutions: d=42 or d=4−20.
Reduce to simplest form: Reduce the fractions to simplest form: d=21 or d=−5.
Round non-integer solution: Round the non-integer solution to the nearest hundredth if necessary: d=0.50 or d=−5.
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