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zheka24 [161]
4 years ago
15

Factored expression 16m2-9

Mathematics
1 answer:
kirza4 [7]4 years ago
4 0

Answer:

The factored form of  16m²-9 = (4m+3)(4m-3)

Step-by-step explanation:

16m²-9

To find the factors of the expression, first you have to find out the perfect square of the terms:

4 is the perfect square of 16

∴4 is the number if multiplied two times wil give the product of 16.

m is the perfect square of m²

3 is the perfect square of 9

Then,

16m2-9 = (4m)² - (3)²

Now apply the perfect square formula:

a²  - b²  = (a+b)(a-b)

Therefore,

(4m)² - (3)² = (4m+3)(4m-3)

Thus the factored form of  16m²-9 = (4m+3)(4m-3) ....

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Simplify the following polynomial expression. (5x^4 - 9x^3 + 7x - 1) + (-8x^4 + 4x^2 - 3x + 2) - ( -4x^3 + 5x - 1)( 2x - 7)
Lady bird [3.3K]

Answer: 5x^{4}-37x^{3}-6x^{2} +41x-6


Step-by-step explanation:

1. You must apply the Distributive property.  You need to remember the product property of exponents: If you multiply powers with the same base, you must add the exponents. Them you have:

=5x^{4}-9x^{3}+7x-1-8x^{4}+4x^{2}-3x+2-(8x^{4}+28x^{3}+10x^{2}-35x-2x+7)\\=5x^{4}-9x^{3}+7x-1-8x^{4}+4x^{2}-3x+2-8x^{4}-28x^{3}-10x^{2}+35x+2x-7

2. Now, you must add the like terms. Then, you obtain the following result:

=5x^{4}-37x^{3}-6x^{2} +41x-6



7 0
3 years ago
It is recommended that you use 3.75 pound of fertilizer to cover 1,200 square feet. How much space can you cover with a 1-pound
uysha [10]

Answer:

320 square feet

Step-by-step explanation:

To find the space you can cover with 1-pound bag of fertilizer, we need to divide 1,200 by 3.75. It makes things easier to think of how 3.75 ÷ 3.75 = 1. Anyways, 1,200 ÷ 3.75 = 320. Therefore, you can cover 320 square feet with a 1-pound bag of fertilizer.

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2 years ago
Find the zeros of the function: f(x) = x^2 - 4x - 21
IrinaK [193]

Answer:

x = 7, x = -3

Step-by-step explanation:

We can find the zeros by factoring the equation using the zero product property.

x^2-4x-21 = 0

(x-7)(x+3) = 0

<u>x-7 = 0</u>

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3 years ago
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3 years ago
WILL MARK YOU BRAINLIEST ASAP
34kurt

Answer:

(-0.5, -1)

Step-by-step explanation:

To find the midpoint add the coordinates then divide by 2

x = (2 + -1)/2

x = 1/2 = 0.5

y = (3 + -5)/2

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3 years ago
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