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RossThis type of expression is what we call a "difference of squares". This occurs whenever a perfect square is subtracted from another perfect square. It can be factored out to:
(x + y)(x - y)
To see why that is, try multiplying those two factors back together:
(x + y)(x - y)
= x(x - y) + y(x - y)
= x2 - xy + yx - y2
= x2 - xy + xy - y2
= x2 - y2
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The circle is centered at the origin and the length of its radius is 8 What is the circle's equation?
The equation of a circle centered at the origin is x2 + y2 = r2; in this case, x2 + y2 = 64.The equation of a circle centered at the origin is x2 + y2 = r2; in this case, x2 + y2 = 64.The equation of a circle centered at the origin is x2 + y2 = r2; in this case, x2 + y2 = 64.The equation of a circle centered at the origin is x2 + y2 = r2; in this case, x2 + y2 = 64.
What is the formula to calculate the slope?
It's m = y2 - y1/ x2- x1 It's m equals y2 minus y1 over x2 minus x1
X2 plus y2 equals 100 what is the lengrth of the circles radius?
X2 + y2 = 100 = r2 r = 10
What are the factors of x2 - y4?
-2
Is equation is x2 plus y2 equals 1 what is the circles radius?
Proper form first. X2 + Y2 = 1 Y2 = 1 - X2 Y = (+/-) sqrt(1 - X2) -------------------------- zero out the X Y = (+/-) sqrt(1 - 02) Y = 1 ----------------the radius of this circle
