Find Conjugate: Select the conjugate of −10−5.The conjugate of a−b is a+b.So, the conjugate of −10−5 is −10+5.
Multiply by Conjugate: Multiply the numerator and the denominator by the conjugate of the denominator.To rationalize the denominator, we multiply the expression by (−10+5)/(−10+5).This gives us (3⋅(−10+5))/((−10−5)⋅(−10+5)).
Simplify Numerator: Simplify the numerator.Multiplying 3 by each term in the conjugate −10+5 gives us:3×(−10)+3×5=−30+35.
Simplify Denominator: Simplify the denominator using the difference of squares formula.The denominator is a difference of squares: (−10)2−(5)2.Calculating each term gives us:100−5=95.
Write Simplified Expression: Write the simplified expression.The simplified expression is (−30+35)/95.This fraction can be further simplified by dividing each term in the numerator by 5, the greatest common divisor of the numerator and the denominator.
Divide by Common Divisor: Simplify the fraction by dividing by the greatest common divisor.Dividing each term in the numerator by 5 gives us:(−30/5)+(3/5)5= −6+(3/5)5.So the final simplified expression is (−6+(3/5)5)/95.
Further Simplify Fraction: Simplify the fraction further by dividing the denominator.Since 95 is divisible by 5, we can simplify the fraction by dividing the denominator by 5:(−6+(53)5)/(595)=(−6+(53)5)/19.
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