Expand x(x+4)
You must expand the brackets and then handle each section separately x multiplied by x = x^2 x multiplied by 4 = 4x answer is x^2 + 4x
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Related Maths GCSE answers
All answers ▸Solve the equation 3x + 1 = 4x - 2
You area told that y is proportional to x2 and that when y = 75, x = 5. a) Find a formula for y in terms of x. b) Find the value of y when x = 3. c) Find the value of x when y = 1200.
Make x the subject of the equation. 7xy+6 = 18x+3y+7
Factorise fully the following: 12x^3 + 3x^2 + 15x