Answer:
prime
Step-by-step explanation:
3x^2 + 5x + 1
it can't be factorizes with rational numbers
Answer:
2+2y
Step-by-step explanation:
20=2(y-6)+10
20= (2×y-2×6)+10
20= (2y-12)+10
Open the bracket
20=2y-12+10
Collect liked terms
20=12+10+2y
20=22+2y
=22-20+2y
2+2y
Hope this helps
Comment for more explanation
Hello,
It seems that multiplication tables were invented by Pythogore .
Later in the middle ages , a abacus has been invented by a guy who where living near my house : Gerbert d'Aurillac who became pape (Sylvestre 2 ,945-1003).
Answer:
see below
Step-by-step explanation:
Since 2x appears on the left side of both equations, that term can be eliminated by subtraction, which is what the first choice suggests.
The result will be ...
3y = 7 -4y +5 . . . . . . . . . second equation subtracted from the first
7y = 12 . . . . . . add 4y
y = 12/7 . . . . . . divide by 7
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However, the fact that 2x is by itself on the left side of the second equation suggest that <em>substitution</em> may also be a good option. Perhaps an equally good first step is to use the expression in the second equation to substitute for 2x in the first:
(4y -5) +3y = 7
Either way, the resulting equation is 2-step.
7y = 12 . . . add 5
y = 12/7 . . . divide by 7
___
The other suggested "first steps" do nothing useful.
Answer:
x = -(7/2)^(1/6) or x = (7/2)^(1/6) or x = -(-1)^(1/3) (7/2)^(1/6) or x = (-1)^(1/3) (7/2)^(1/6) or x = -(-1)^(2/3) (7/2)^(1/6) or x = (-1)^(2/3) (7/2)^(1/6)
Step-by-step explanation:
Solve for x:
2 x^6 - 7 = 0
Add 7 to both sides:
2 x^6 = 7
Divide both sides by 2:
x^6 = 7/2
Taking 6^th roots gives (7/2)^(1/6) times the 6^th roots of unity:
Answer: x = -(7/2)^(1/6) or x = (7/2)^(1/6) or x = -(-1)^(1/3) (7/2)^(1/6) or x = (-1)^(1/3) (7/2)^(1/6) or x = -(-1)^(2/3) (7/2)^(1/6) or x = (-1)^(2/3) (7/2)^(1/6)