Question

T^2+3s+3t+st=()(t+s)

Answer 1

We can figure out the factor by just intelligent guessing. we see a
`t^2` on the LHS so RHS should generate it. So the missing factor should contain a
`t`. LHS also has a
`3s`. To get it the factor should contain a
`+3`. Now we can check if other terms of LHS will be generated from the RHS. Our RHS is
`(t+3)(t+s)=t^2+3s+3t+st=RHS`. Bingo!!

But more mathematical method will be as follows:

`image`