if r=6 find the value of 2r×r +7r +15/r×r-3r+9
Answers
Answered by
0
Answer:
120
Step-by-step explanation:
if r=6
according to problem
=(2*6*6)+(7*6)+(15/6*6)-(3*6)+9
=72+42+15-18+9
=114+15-18+9
=129-18+9
=111+9
=120
Answered by
1
Answer:
120
Step-by-step explanation:
now r =6, we have to substitute 6 in place of r
equation- 2r*r+7r+15/r*r-3r+9
ans:
= 2(6)(6) + 7(6) + 15/6*6 - 3(6) + 9
= 72 + 42 + 15 - 18 + 9
= 129 - 9
= 120
Therefore the value is 120
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