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Vera_Pavlovna [14]
2 years ago
13

Your answer should be a polynomial in standard form. (x + 5)(x +3)=(x+5)(x+3)

Mathematics
1 answer:
sattari [20]2 years ago
7 0

Answer:

∴(x+5)(x+3) =x²+8x+15

Step-by-step explanation:

Standard form of a polynomial:

Standard of polynomial means that the terms ordered from biggest exponent of variable to lowest exponent of variable.

Example:

a_nx^n+a_{n-1}x^{n-1}+a_{n-2}x^{n-2}+......

Given,

(x+5)(x+3)

=x(x+3)+5(x+3)

=x²+3x+5x+15

=x²+8x+15

∴(x+5)(x+3) =x²+8x+15

The degree of the polynomial is 2 and is a one variable polynomial.

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Three more than the product of a number and 9 is equal to 7.
4vir4ik [10]

Answer:

(x*9)+3=7

Step-by-step explanation:

three more is +3

product of a number and 9 is x*9

and equal to seven is =7

8 0
3 years ago
The distance from the Earth to the Moon is 384 000 km. Work out the time it would take a car travelling at 100 km/h to travel 38
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2 years ago
A rectangular deck has an area of 320ft^2. the length of the deck is 4 feet longer than the width. find the dimensions of the de
Digiron [165]
A = L * W
A = 320
L = W + 4

320 = W(W + 4)
320 = W^2 + 4W
W^2 + 4W = 320
W^2 + 4W + 4 = 320 + 4
(W + 2)^2 = 324
W + 2 = (+-) sqrt 324
W = -2 (+-) 18

W = -2 + 18 = 16 ft <== this is the width
W = -2 - 18 = -20....not this one because it is negative

L = W + 4
L = 16 + 4
L = 20 ft <=== this is the length

in summary...the width is 16 ft and the length is 20 ft 

7 0
3 years ago
Please help I really need it
ratelena [41]

Answer:

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Step-by-step explanation:

4 0
2 years ago
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2 is subtracted from a number and then the difference is multiplied by 5 the result is 30 find the number
trapecia [35]
Answer is 8 because you divide 30 by 5 then you get 6 and when you get 6 you add 2 and the answer is 8
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3 years ago
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