How do you factor 25r ^ { 2} - 10r - 35?
2 Answers
Mar 26, 2017
Explanation:
You solve it for zero using the discriminant
Δ=
then r1=
and r2
so you use the formula
your answer is ....
or further simplified :
Mar 26, 2017
Explanation:
=25(r+7/5)(r-1)