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x² + 5x = 5 Make equal to 0. x² +5x - 5 = 0 Recognise that you need to use the quadratic equation. (-b ± sqrt(b²-4ac))/2 sub in. (-5 ± sqrt(5²-41-5))/2...

Area of square : Base x Height.

Area of Circle: π x (Radius)².

Looking at the diagram we are given the dimensions of the base or he...

(3x-6)(2x-1)

Firstly, look at the given area of the rectangle. As this is 20cm², the length and width of the rectangle could be a combination of 20 and 1; 10 and 2 or 5 and 4. Any of thse options could be u...

If the cross section is 30cm², then we need to multiply the cross section by the length of the prism therefore, it should be 30x25, which is 750cm²