Expand and simplify (x+5)(x+7)

Front - Outer -Inner -Last (FOIL)
x X x = x^2x X 7 = 7x 5 X x = 5x5 X 7 = 35
7x + 5x = 12x
x^2 + 12x + 35

EM

Related Maths GCSE answers

All answers ▸

Solve the simultaneous equations: y = 4x^2 - 9x - 1 and y = 5 - 4x


A fridge of height 2m and width 0.8m is tilted in a delivery van so that one edge rests on the edge of a table and another touches the ceiling, as shown in the diagram. The total height of the inside of the van is 1.5m. Find the height of the table.


Write 0.2(54) as a fraction in its simplest form. (Where 0.2(54) = 0.254545454...)


Prove that the difference of the square of two consecutive odd numbers is always a multiple of 8. [OCR GCSE June 2017 Paper 5]