Multiply out: (x - 2)(x + 5)
This can be seen as the same as (x)(x + 5) + (-2)(x + 5). So you are just multiplying the first value in the first brackets with both the values in the second brackets. This is xx + x5 which equals x^2 + 5x. Then you do the same for the second value from the first brackets, this is -2*x + (-2)*5 which equals -2x - 10. So all together the answer is: x^2 + 3x - 10.
This can also be calculated using the 'smily face method'.
TS
Related Maths GCSE answers
All answers ▸How can I use the Pythagoras' Theorem to work out the length of a missing side of a triangle?
How would I make S the subject of the formula in the equation V^2 = U^2 + 2AS
Find the value of 5x - 3y when x = -2 and y = -4
I buy a car from a dealership for £3500. The car depreciates in value for every year I own it. What is the value of the car after I have owned it for 18 months if it depreciates at a rate of 5 percent?