Q. Simplify using Factorization: (39y3(50y2−98))/(52y2(5y+7))
Factor Common Factors: Factor out the common factors in the numerator and the denominator.The numerator is 39y3(50y2−98) and the denominator is 52y2(5y+7). We can see that both the numerator and the denominator have common factors of y2 and numbers that are multiples of 13.
Factor by Greatest Divisor: Factor 39 and 52 by their greatest common divisor, which is 13. 39=13×352=13×4Now we can rewrite the expression with these factors.(13×3×y3×(50y2−98))/(13×4×y2×(5y+7))
Cancel Common Factors: Cancel out the common factors.The common factors of 13 and y2 can be canceled from the numerator and the denominator.This leaves us with:4⋅(5y+7)3⋅y⋅(50y2−98)
Factor Expression: Factor the expression 50y2−98 by looking for a common factor.Both terms are divisible by 2.50y2−98=2×(25y2−49)Now we can rewrite the expression with this factor.(3×y×2×(25y2−49))/(4×(5y+7))
Factor Difference of Squares: Notice that 25y2−49 is a difference of squares and can be factored further.25y2−49=(5y)2−72=(5y+7)(5y−7)Now we can rewrite the expression with this factor.(3⋅y⋅2⋅(5y+7)(5y−7))/(4⋅(5y+7))
Cancel Common Factor: Cancel out the common factor of (5y+7) from the numerator and the denominator.This leaves us with:43×y×2×(5y−7)
Simplify Coefficients: Simplify the remaining expression by dividing the coefficients.3×2=66/4=3/2Now we have:(3/2)×y×(5y−7)
Distribute (3/2): Distribute the (3/2) across the terms in the parentheses.(3/2)×y×5y=(15/2)×y2(3/2)×y×(−7)=(−21/2)×yThe simplified expression is:(15/2)×y2−(21/2)×y