Question

Mr. Ramkumar has a beautiful rectangular garden and a swimming pool (in the form
of a cuboid) in his luxurious bungalow. The area of the garden is x2+2x-15.

(i) What are the dimensions of the garden ?
a) (X-5) and (X+3) b) (X+5) and (X+3)
c) (X+5) and (X-3) d) (X-5) and (X-3)

(ii) The water capacity of swimming pool up to the rim is x3-23x2+142x-120.
What are the dimensions of the swimming pool ?
a) (X-1),(X-10) and (X-12) b) (X+1),(X+10) and (X+12) c) (X-1),(X+10) and (X-12) d) (X+1),(X-10) and (X+12)

(ii) Find the perimeter of the garden :
a) 4x-4 b) 2x-4
c) 2x+4 d) 4x+4

(iv) The cost of painting the pool, if the cost of painting is Rs. 5/- per sq. unit.
a) 25x2-405x+1370 b) 25x2+405x+1370
c) 25x2-405x-1370
d) none of these


It's urgent Plzz tell the answer fast
If you tell the answer fast and correct I will mark u as brainliest..
Plzz guys help me fast
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Answer 1

Answer:

(i)c. (ii)a. (iii)d.

Step-by-step explanation:

i) x²+2x-15

=x²+5x-3x-15

=(x+5)(x-3)

(ii)

x³-23x²+142x-120

=x³-x²-22x²+22x+120x-120

=x²(x-1)-22x(x-1)+120(x-1)

=(x-1)(x²-22x+120)

=(x-1)(x-10)(x-12)

(iii)

perimeter=2*(x+5+x-3)=4x+4

(iv)

Answer 2

Answer:

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u r girl or boy ..