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We have a quadratic equation since the highest power of x is 2. Therefore, we can use the quadratic formula, which we recall to be: x = [- b ± √(b² - 4ac) ] / 2a In accordance with the formula, we set a =...

When each term has the same base, add the indices that are multiplied. Then subtract the indices that are divided.

a^5 x a^16 / a^ 4 = a^(5+16) / a^4 

                            = a^ 21 / a...

First, check whether the triangle in the question is a right angle. If it is then SOHCAHTOA is used every time.

If not, count how many sides we know the length of and how many angles we know the va...

Using the grid method, we know this is equal to (10100) + (1020) + (7100) + (720) = 1000+200+700+140 = 2040

If a number is to the power of 2/3, you should think of it as to the power of 1/3 (so CUBE-rooted), and then being to the power of 2 (so squared).

So here, the cube root of 64 is 4, because 4x4x4=6...