a.) 15(a2 – 1) = 5(2a – 2)
b.) 15(2a – 2) = 5(a2 – 1)
c.) 15(a2 – 1)(2a – 2) = 5(2a – 2)(a2 – 1)Answer:
Option (b) is correct.
[tex]{15}(2a-2)={5}(a^2-1)[/tex] equation results from cross-multiplying.
Step-by-step explanation:
Given : expression [tex]\frac{15}{a^2-1}=\frac{5}{2a-2}[/tex]
We have to find the results obtained from cross-multiplying the given expression and choose the correct option from given options.
Consider the given expression [tex]\frac{15}{a^2-1}=\frac{5}{2a-2}[/tex]
Cross multiply is done by Multiplying the top and bottom of the first fraction by the bottom number of the second fraction.
Thus, for the given expression [tex]\frac{15}{a^2-1}=\frac{5}{2a-2}[/tex]
We have,
[tex]{15}(2a-2)={5}(a^2-1)[/tex]
Thus, option (b) is correct.
