Question

5p2-6p2-7r2+6p2-5q2+2r2 simplify values if ( p=-1,q=1,r=2)​

Answer 1

Step-by-step explanation:

value are directly substituted

in the attachment

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Answer 2

Answer:

-27+9

Step-by-step explanation:

5p2-6p2-7r2=6p2-5q2+2r2

5(1)2-6(1)2-7(2)2+6(1)2-5(1)2+2(2)2

5-6-7(4)+6-5+2(4)

1-28++8

-27+9