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2x²+21x+40=0factors of 40=1&40, 2&20, 4&10, 5&85 & 8 are correct factors as 5 + 2*8 = 21(2x+5)(x+8)=0So, x = -8 & -2.5

Let x = 0.303030...
We do not want to deal with a recurring decimal, and so we want to cancel this out. The easiest way to do this is to multiply x by 10 and this means we multiple our decimal by 10 ...

For this question, the main component of the equation we need o look at is (x+8)^2. We know that (x+8)^2 is the same as (x+8)(x+8). First we have to expand these brackets. For his I make small table to en...

An exponential function increases slowly at first and then very rapidly. In the case of decay it would decrease very rapidly and then slow down. It never incepts with the x-axis and only once with the y-a...

To convert a mixed fraction to an improper fraction (top-heavy), follow these steps: 1. Multiply the whole number part by the number in the denominator. So 6x9 = 54.2. Add this result to the number in the...