Expand and simplify (x − 4)(2x + 3y)^2
Expand the (2x + 3y)^2 term to give 4x2 + 9y2 +12xy Expand (x - 4)(4x2+ 9y2+12xy) to give (4x3+9xy2 + 12x2y - 16x2 -36y2 - 48xy)
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All answers ▸Expand and simplify (b-4)(b+5)
Amanda and Wim share some money in the ratio 2:5. Wim receives £115. Calculate how much money was shared?
Solve these simultaneous equations algebraically: y=2x^2 - 7x + 4 & y=4x-1
Use approximations to 1 significant figure to estimate the value of 0.101 x (51.2)^2 / (3.96)^1/2