Q. Simplify. Rationalize the denominator.−10+310
Identify Conjugate of Denominator: Identify the conjugate of the denominator.The conjugate of a number of the form a+b is a−b. Therefore, the conjugate of 10+3 is 10−3.
Multiply by Conjugate: Multiply the numerator and the denominator by the conjugate of the denominator.To rationalize the denominator, we multiply both the numerator and the denominator by the conjugate of the denominator.(−10+310)×10−310−3
Distribute Multiplication in Numerator: Distribute the multiplication in the numerator.Multiply −10 by each term in the conjugate 10−3.−10×10=−100−10×(−3)=103So, the numerator becomes −100+103.
Expand Denominator: Expand the denominator using the difference of squares formula.(10+3)×(10−3)=102−(3)2100−3=97So, the denominator becomes 97.
Write Simplified Expression: Write the simplified expression.The simplified expression with the rationalized denominator is (−100+103)/97.
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