**Question:**2)List the like terms in the following group of terms.

6s, –7rs2, –10r2s, –9rs2, 5rs2, –3r2

3)Evaluate.(2)(–9) + 28

1.

One less than x is written:

x - 1.

2.

6s, –7rs^2, –10r^2s, –9rs^2, 5rs^2, –3r^2

6s stands alone. There are no other terms which are just a number multiplied by s.

There are three terms in rs^2:

-7rs^2, -9rs^2, 5rs^2.

-10r^2s stands alone. There are no other terms in r^2s.

-3r^2 stands alone. There are no other terms in r^2.

3.

2(-9) + 28

= -18 + 28

= 10.

1)x-1

2)There are no like terms

3)(2)(-9)+28=-18+28=10

1 less than a number - let x be the number so x-1 is one less

for number two, like terms are ones that have the same variables so -7rs2, -9rs2 and 5rs2 would be like since they all have rs2

2*-9=-18

then-18+28 = 10

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