Math, asked by srivastavasangeeta96, 19 days ago

81 r 9 =
maths question

Answers

Answered by BabySmoochies

8

81 r = 9

r = 81/9

r = 9 (answer)

Answered by βαbγGυrl

1

Answer:

9r^2=81r

We move all terms to the left:

9r^2-(81r)=0

a = 9; b = -81; c = 0;

Δ = b2-4ac

Δ = -812-4·9·0

Δ = 6561

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