Solve using the quadratic formula.2p2+p−5=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.p= _____ or p= _____
Q. Solve using the quadratic formula.2p2+p−5=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.p= _____ or p= _____
Quadratic Formula: The quadratic formula is given by p=2a−b±b2−4ac, where a, b, and c are the coefficients from the quadratic equationax2+bx+c=0. In this case, a=2, b=1, and c=−5.
Calculate Discriminant: First, calculate the discriminant, which is the part under the square root in the quadratic formula: b2−4ac. Here, it is 12−4(2)(−5)=1+40=41.
Apply Formula: Now, apply the quadratic formula with the values of a, b, and c:p=2⋅2−1±41p=4−1±41
Two Solutions: Since 41 cannot be simplified further, we have two solutions for p: p=4−1+41 or p=4−1−41
Decimal Approximations: These solutions cannot be simplified to integers or proper fractions. They can be approximated as decimals:p≈(−1+41)/4≈(−1+6.40)/4≈5.40/4≈1.35 (rounded to the nearest hundredth)p≈(−1−41)/4≈(−1−6.40)/4≈−7.40/4≈−1.85 (rounded to the nearest hundredth)
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