Answer:
x = √2 = 1.414
Step-by-step explanation:
5x-(x+2)^2=x^2-8+x
since (x+2)^2 = x^2 + 2(x)(2) + 2^2 = x^2 + 4x + 4
so
5x - (x^2 + 4x + 4) = x^2 + x - 8
-x^2 + x - 4 = x^2 + x - 8
x^2 + x^2 + x - x = -4 + 8
2x^2 = 4
x^2 = 2
x = √2 = 1.414
The coefficient is: "1" .
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Note: There is an "<u>implied coefficient</u>" of "1"; since "1", multiplied by any value, is equal to that exact same value; by convention, we eliminate the "1" as a coefficient.
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Further explanation:
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(x+p)(x−q) = x² − xq + px − pq ;
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(x+p)(x−q) = {using "FOIL" → "First, Outer, Inner, and Last" terms}:
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<u>F</u>irst: x*x = x² ;
<u>O</u>uter: x*(-q)= -xq ;
<u>I</u>nner: p*x = px ;
<u>L</u>ast: p*(-q) = -pq
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(x + p)(x − q) = x² − xq + px − pq .
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the answer is going to be -1
Answer:
The number of pools clean per hour is 1.5
Step-by-step explanation:
Given as :
The number of pools clean in 8 hours = 12
The number of pools clean in 7.5 hours = 9
Let The number of pools they clean per hours = x
I.e x = 
+ 
Or, x = 
Or, x = 
∴ x = 
I.e x = 1.5
Hence The number of pools clean per hour is 1.5 Answer
3x and -2x are like terms because they both have the variable X
