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First expand the given expression √ 5(√ 8+√ 2) = √ 40 + √ 10 Now get it in the format where it has √ 10 in it. √ 40 + √ 10 = √ 4√ 10 + √ 1√ 10 and simplify this as you would in algebra by collecting like ...

To work out the point at which the line hits the y axis, we need to know where x = 0. In order to do this, we need to set x = 0, and so we are left with x = 4.
To find the turning point, we need to...

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The cos(pi/2-x) is equivalent to sinx because the cosx graph is just the sinx graph but shifted to the left by a phase difference of pi/2 radians, and cos(pi/2 - x) is also shifting the cosx graph to the ...

The general equation for a circle is as follows:(x-a)^2+(y-b)^2=r^2where (a,b) are the coordinates of the centre of the circle and r is the radius of the circle.x^2+y^2-4x-8y+11=0In this case, group all x...