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Effectus [21]
3 years ago
10

5

Mathematics
1 answer:
storchak [24]3 years ago
5 0

why math Step-by-step explanation:

i hate math but i  will try my best

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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 is 1/6 of 54= 1/3 of WHAT
hodyreva [135]

Answer:

27

Step-by-step explanation:

⅙ × 54 = ⅓ × x

9 = x/3

x = 27

7 0
3 years ago
Read 2 more answers
What is the standard form of (6x^2-8x-7)+(8x^2-76x)
Studentka2010 [4]

Answer:  14x^2 - 84x - 7

====================================================

Explanation:

The like terms 6x^2 and 8x^2 combine to 14x^2

The like terms -8x and -76x combine to -84x

Nothing pairs with the -7, so its stays as is.

Standard form is where we list the terms in decreasing exponent order. We can think of -84x as -84x^1 and the -7 as -7x^0. So 14x^2 - 84x - 7 would be the same as 14x^2 - 84x^1 - 7x^0. The exponents count down: 2,1,0.

The final answer is a trinomial since it has three terms. It is also a quadratic because the degree (highest exponent) is 2.

5 0
3 years ago
525 metres in 30 minutes
professor190 [17]

Answer:

what you want to know...

Step-by-step explanation:

please write complete question.....

So,I can understand it

3 0
3 years ago
may wants to travel to the wedding a horse-drawn carriage. the horse trots at a speed of 15 km/h and Mary is getting dressed at
zepelin [54]
20min. 1h = 60min
15÷5=3
60÷3=20min
4 0
4 years ago
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