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The aim of the question is to equate x= into an expression.Step 1. Look to see if you can simplify the equation. On the left hand side of the equation you can see that 3 is a factor of 12. And also a fact...
Formula for the volume of a cone = 1/3 * 3.14 * r^2 * h Therefore, volume = 1/3 * 3.14 * (2)^2 * 3 = 12.57m^3 .
If you have a surd, for example root27, in order to simplify it you need to find factors of it which are square numbers. Multiplying surds is like regular multiplication, for example, root27 = roo...
For f(x) not to have any real roots, its discriminant, b2-4ac < 0. Plugging in the coefficients from f(x), this means (-(2c+8))2-4x4x4 < 0.This means (-(2c+8))2 <...
X*(X+2) = 8X2 + 2X = 8X2 +2x-8=0 S 2P -8N 4, -2(X+4)(X-2)X=-4 X=2X can only be positive in this case so X=2
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