Q. Select the answer which is equivalent to the given expression using your calculator.−16−12−612248+312122144+912122144−91212248−312
Simplify square root: First, simplify the square root in the denominator of the given expression.12=(4⋅3)=4⋅3=23
Substitute simplified value: Now, substitute the simplified square root back into the original expression. (−6)/(−16−23)
Multiply by conjugate: To eliminate the square root from the denominator, multiply the numerator and the denominator by the conjugate of the denominator. The conjugate of (−16−23) is (−16+23).(−16−23−6)×(−16+23−16+23)=(−16−23)×(−16+23)(−6)×(−16+23)
Perform numerator multiplication: Perform the multiplication in the numerator.(−6)×(−16+23)=96−123
Use difference of squares: Perform the multiplication in the denominator using the difference of squares formula.((−16)2−(23)2)=256−4⋅3=256−12=244
Write simplified expression: Now, write the simplified expression with the multiplied numerator and denominator. (96−123)/244
Divide by greatest common divisor: To simplify further, divide both terms in the numerator by the denominator. 24496−244123
Perform division: Simplify the fractions by dividing the numerator and denominator by their greatest common divisor, which is 4 for the first term and 12 for the second term.496/4244−12123/12244
Correct second term division: Perform the division for both terms. 6124−20.3333…3
Correct second term division: Perform the division for both terms. 24/61−3/20.3333... Since the denominator 20.3333... is not a simplified fraction, we need to correct this. The correct division for the second term is (123)/244=(3)/20.3333...=3/20.3333...=3/20.3333...
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