Question

if r=6 find the value of 2r×r +7r +15/r×r-3r+9​

Answer 1

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

Answer 2

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