Question

How do you factor 42r² -3rt - 9t²?

Answer 1

Solution:

Given 42r²-3rt-9t²

= 3(14r²-rt-3t²)

= 3( 14r²-7rt+6rt-3t²)

= 3[7r(2r-t)+3t(2r-t)]

= 3(2r-t)(7r+3t)

Therefore,

42r²-3rt-9t² = 3(2r-t)(7r+3t)

•••

Answer 2

Hey!

Refer the below attachment !

Thanks !