Q. Solve the equation 2x2−7x−36=−2x2−26 to the nearest tenth.Answer: x=
Combine Terms: Combine like terms and move all terms to one side of the equation to set it equal to zero.2x2−7x−36=−2x2−262x2+2x2−7x−36+26=04x2−7x−10=0
Quadratic Equation: Now, we need to solve the quadratic equation4x2−7x−10=0. We can use the quadratic formula, x=2a−b±b2−4ac, where a=4, b=−7, and c=−10.
Calculate Discriminant: First, calculate the discriminant, which is b2−4ac.Discriminant = (−7)2−4(4)(−10)Discriminant = 49+160Discriminant = 209
Apply Quadratic Formula: Since the discriminant is positive, there are two real solutions. Now, apply the quadratic formula.x=2⋅4−(−7)±209x=87±209
Calculate Values: Calculate the two possible values for x.x1=87+209x2=87−209
Final Solutions: Use a calculator to find the numerical values to the nearest tenth.x1≈(7+14.5)/8x1≈21.5/8x1≈2.7x2≈(7−14.5)/8x2≈−7.5/8x2≈−0.9
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