If #a^2 + b^2 = z and ab =y#, what will be the equivalent of #4z+8y#?
2 Answers
May 24, 2018
Explanation:
do some substitution:
May 24, 2018
Explanation:
This is a substitution and simplification problem. Begin by taking the information we're given substitute z and y.
If
From here, we distribute 4 into
After the distribution we have
Rearrange our terms
From here, we need to recognize that this is the expanded form of a binomial raised to a second power.
Factor out a 4 from all 3 terms, and condense the expansion back into the binomial form.