Expand and simplify (x − 4)(2x + 3y)^2

Answer: 4x3 + 12x2y + 9xy2 - 16x2 - 48xy - 36y2

DH

Related Maths GCSE answers

All answers ▸

A different pattern is made using 20 straight lines and 16 arcs. The straight lines and arcs are made of metal. 20 straight lines cost £12 and the cost of one straight line: cost of one arc = 2:3. Work out the total cost of metal in the pattern.


Solve x² - 3x - 2 = 0


5q^2.p^12/10(q.p^3)^2


Express x^2 +10x -3 in the form (x + p)^2 + q