Answer:
1. (5g+9h)+(-18g+30)-(-5h-7)
remove parenthesis
5g+9h+(-18g)+30+5h+7 (rule of integers if operation is negative,*change sign*
combine like terms
= -13g+14h+37
2. (10x-35x²+10)+(-5x²-10x²+2x+26)
10x-35x²+10+(-5x²)-10x²+2x+26
= -50x²+12x+38
3. (60a⁴+30a³+11a+2)-(-10a⁴-15a²-17)
change sign
60a⁴+30a³+11a+2+10a⁴+15a²+17
= 70a⁴+30a³+15a²+11a+19
4. (55y⁴+33y³+11y+2)+(-6y⁴+22y²+8y-17)
= 49y⁴+33y³+22y²+19y-15
5. (26r³-10r-35r²+10)-(-16r²-20r³+2r+22)
26r³-10r-35r²+10+16r²+20r³-2r-22 (change sign)
= 46r³-19r²-12r-12
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Answers & Comments
Answer:
1. (5g+9h)+(-18g+30)-(-5h-7)
remove parenthesis
5g+9h+(-18g)+30+5h+7 (rule of integers if operation is negative,*change sign*
combine like terms
= -13g+14h+37
2. (10x-35x²+10)+(-5x²-10x²+2x+26)
remove parenthesis
10x-35x²+10+(-5x²)-10x²+2x+26
combine like terms
= -50x²+12x+38
3. (60a⁴+30a³+11a+2)-(-10a⁴-15a²-17)
remove parenthesis
change sign
60a⁴+30a³+11a+2+10a⁴+15a²+17
= 70a⁴+30a³+15a²+11a+19
4. (55y⁴+33y³+11y+2)+(-6y⁴+22y²+8y-17)
remove parenthesis
combine like terms
= 49y⁴+33y³+22y²+19y-15
5. (26r³-10r-35r²+10)-(-16r²-20r³+2r+22)
remove parenthesis
26r³-10r-35r²+10+16r²+20r³-2r-22 (change sign)
combine like terms
= 46r³-19r²-12r-12
#HardworkIsTheBestToolToLearn