Simplify the expression: (2a + a)x(5a - a)
Evaluate each bracket first. We have:(2a + a)x(5a - a) = (3a)x(4a)Then, multiply both brackets.(3a)x(4a) = 12a2
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Related Maths GCSE answers
All answers ▸Solve the simultaneous equations 5x + y = 21 x - 3y = 9
Factorise: y = x^2 + 5x + 6
Harry drives from Exeter to London in 4 hours at an average speed of 70km/h. Ron drives from Exeter to London in 5 hours. (a) Assuming Ron took the same route as Harry, calculate Ron's average speed.
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