How do you factor by grouping #8st+28t-10s-35#?

1 Answer
Don't Memorise
Apr 10, 2015

We can factorize the expression by forming groups of 2 terms.

#8st+28t-10s-35#

#= (8st+28t)+(-10s-35)#

#4t# is a common factor in the first group, and #-5# is a common factor in the second.

# = 4t(2s+7) + (-5)*(2s+7)#

#color(green)( = (2s+7) * (4t - 5)# is the factorised form of #8st+28t-10s-35#

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