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iragen [17]
3 years ago
15

2x(x+1)-2=2(x-3)(x+3)

Mathematics
2 answers:
Ilya [14]3 years ago
5 0

Answer:

x=-8

Step-by-step explanation:

I solved for x and got this :)

Hope this helps :D

xz_007 [3.2K]3 years ago
3 0

Answer:

2x(x + 1) - 2 = 2(x - 3)(x + 3) \\  =  > 2 {x}^{2}  + 2x - 2 = 2( {x}^{2}  -  {3}^{2} ) \\  =  > 2 {x}^{2}  + 2x - 3 = 2 {x}^{2}  - 2(9) \\  =   > 2 {x}^{2}  + 2x - 3 \: is \: not \: equal \: to \: 2 {x}^{2}  - 1

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If (1 + 2x)^5+ (1 - 2x)^5 = a + bx + cx?<br> find the values of the constants a, b and c.
eimsori [14]

Answer:

steps below

Step-by-step explanation:

5th level of Pascal triangle: 1,5,10,10,5,1

(1+2x)⁵ = 1*1⁵*(2x)⁰+5*1⁴*2x+10*1³*(2x)²+10*1²*(2x)³+5*1¹(2x)⁴+1*1⁰*(2x)⁵

           = 1 + 10x + 40x² + 80x³ + 80x⁴ + 32x⁵   .. (1)

(1-2x)⁵ =  1  - 10x + 40x² - 80x³  + 80x⁴ - 32x⁵  .. (2)

(1)+(2): (1+2x)⁵ + (1-2x)⁵ = 160x⁴ + 80x² +2

a + bx + cx ?? suppose it's ax⁴ + bx² + cx, if you have other set up.. adjust by yourself

<u>a = 160,    b = 80,    c = 2</u>

3 0
3 years ago
Which expression gives the best estimate of 30 percent of 61?
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What two consecutive numbers have a sum of 53? Thanks! :P
Musya8 [376]
Let's the name the first number x and the consecutive number x + 1. The sum of both of these numbers equals to 53.

We now have our equation:

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4 0
4 years ago
Read 2 more answers
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