Answer:
the answer is b. 25
8w^2+2w-3
Answer:
width = 5 m
Step-by-step explanation:
let the width of the room be w then the length = 2w + 5 ( that is 5 more than twice its width )
perimeter is the sum of the sides
for a rectangular room the perimeter is calculated as
perimeter = 2 ( length + width ) = 2(2w + 5 + w) = 2(3w + 5)
given the perimeter is 40 m , then equating
2(3w + 5) = 40 ( divide both sides by 2 )
3w + 5 = 20 ( subtract 5 from both sides )
3w = 15 ( divide both sides by 3 )
w = 5
that is the width of the room is 5 m
find the product
(5n+6)(5n-5)
The solution of expression after multiplying is,
⇒ 25n² + 5n - 30
We have to given that,
To multiplying polynomials is,
⇒ (5n + 6) (5n - 5)
Now, We can multiply as,
⇒ (5n + 6) (5n - 5)
⇒ 5n × 5n + 5n × - 5 + 6 × 5n + 6 × - 5
⇒ 25n² - 25n + 30n - 30
⇒ 25n² + 5n - 30
Therefore, The solution is,
⇒ 25n² + 5n - 30
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