Question

4.The area of a rectangular field is (a2 - 19a +90) square units. Find the width of the rectangle if its
length is (a - 9) units.
​

Answer 1

Step-by-step explanation:

let 'b' be 'x'

area of rectangular field = lb

2a-19a+90 = a-9 × x

-17a+90 = ax - 9x

Answer 2

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