Question

factoring:
42r2-69r+20=7r2-8

Answer 1

factoring:
42r2-69r+20=7r2-8
can someone help me

Answer 2

see it...1st make this eq in simplified form that add or subtract the same termss..on both sides... retricefollows..

Answer 3

(42-7)r2-69r+20+8
=35r2-69r+28

now use quadratic formula to find r. quadratic formula is..

\[r=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]

here in your case...

a=35
b=69
c=28 just plug in values and get result...

Answer 4

but i have to use factoring formula and alos thanks!

Answer 5

plz can someone help , i really need help!