Expand (x+3)(x+6)
Step 1 Using the crab methodLooking at the first bracket:Multiply x by x to give x2Then multiply x by 6 to give 6xThen move onto 3 Multiply 3 by x to give 3xThen multiply 3 by 6 to give 18 Add all these together x2 +6x+3x+18= x2+9x+18
AB
Related Maths GCSE answers
All answers ▸Consider the right angled triangle with vertices labelled a, b, c. Angle A = 60°, Angle B = 90°, length ab=4cm, length ac=xcm. If cos60° = 0.5, work out the value of x.
Alex wants to buy a new phone. It costs £280. Alex’s weekly wage is £420. He saves 15% of his wage each week. How many weeks does it take Alex to save enough money to buy the phone?
1i) solve x^2-4x-21=0
Draw the graph of y=x^2-4x-21