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valkas [14]
3 years ago
13

If n(X)=200,x)=300 and n(XUY)=400thenFind the value of n (B)Step by step

Mathematics
2 answers:
Juliette [100K]3 years ago
6 0
N(x) 200 and so on n(UXY 0400
IgorLugansk [536]3 years ago
4 0
I’m sorry I’m late but you multiply that n(x)=200 by x=300 and n(xuy)=400
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What value should be added to the expression to create a perfect square? x^2 - 20x
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To complete the square:
we take the coefficient ox "x" (which in this problem is -20)
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x^2 -20x +100 = 100
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To get the roots of the equation, we take the square root of both sides:
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(x-10) = square root (10)
x-10 = <span> <span> <span> 3.1622776602 </span> </span> </span>
x1 = <span> <span> <span> 13.1622776602 </span>
and don't forget that square root of 10 also equals  </span></span><span><span><span> -3.1622776602 </span> </span> </span>
x2 = 10 -<span> <span> <span> 3.1622776602
x2 = </span></span></span> <span> <span> <span> 6.8377223398 </span> </span> </span>


4 0
3 years ago
Whats the difference of squares
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