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2x + 2
Firstly, it is best to expand the brackets to get:2c+10+5c-35 (be mindful of the signs inside and outside the bracket because you might get a double minus sign that results in a +, however that is not the...
Let's call an apple 'a', and a pear 'p'.If Tony bought 12 apples and 7 pears for £10.90, then we can write the following equation:12a + 7p = 10.9If an apple costs 20p less than a pear, we can say:a = p - ...
First, rationalise the denominator by multiplying the top and bottom of the fraction by the conjugate of the denominator.(2/(3-sqrt(2)))((3+sqrt(2))/(3+sqrt(2)))Next, expand the brackets - notice ther...
Separate the square: (x-5)2 = (x-5)(x-5)multiply the variables: x2multiply the numbers: -5 x -5 = 25multiply a variable and a number: -5xtimes this value by two: -10xsum all answers:...
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