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bulgar [2K]
1 year ago
15

Expand and simplify this equation plz, 4(3x+5) - 5(8x+2)

Mathematics
1 answer:
omeli [17]1 year ago
7 0

4(3x + 5) - 5(8x + 2) \\ 12x + 20 - 40x - 10 \\ 12 x - 40x + 20 - 10 \\  - 28x + 10

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Encuentra en cada producto notable el error o errores,enciérralo y escribe el resultado correcto.
lbvjy [14]

Given:

The equation is:

(2x+3y)(2x-3y)=4x^2+6y^2

To find:

The error in the given equation and correct it.

Solution:

We have,

(2x+3y)(2x-3y)=4x^2+6y^2

Taking left-hand side, we get

L.H.S.=(2x+3y)(2x-3y)

L.H.S.=(2x)^2-(3y)^2                 [\because a^2-b^2=(a-b)(a+b)]

L.H.S.=(2)^2(x)^2-(3)^2(y)^2       [\because (ab)^x=a^xb^x]

L.H.S.=4x^2-9y^2

It is not equal to right-hand side 4x^2+6y^2. In the right hand side, there must be a negative sign instead of positive sign.

Therefore, (2x+3y)(2x-3y)=4x^2-6y^2.

8 0
3 years ago
What's the gcf of 15 and 4
garri49 [273]
Gcf of 15 and 4 is 1
5 0
2 years ago
Jessica prepared 36 kilograms of dough after working 6 hours. How much dough did Jessica prepare if she worked for 8 hours? Assu
Pepsi [2]

Answer:

48

Step-by-step explanation:

because 36 divided by 6 is 6 and that is how much dough she produces in an hour so if you added two more 6s to 6 to make it 8 meaning you are adding 12 because that is how much dough she makes in an hour

5 0
2 years ago
Please help!!
Ludmilka [50]

Answer:

27 centimeters is equal to 2.7 decimeters

Step-by-step explanation:


3 0
2 years ago
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Which real-world scenario can be described by the algebraic expression 4w? withdrawing w dollars from the bank and giving 4 doll
ANTONII [103]

Answer:

It's B

Step-by-step explanation:

3 0
2 years ago
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