Expand 3(5a-2)
A) 15a - 2
B) 8a - 2
C)9a
D)15a - 6
D is correct - multiply each term in the bracket by what is outside the bracket.
The other 3 answers show different mistakes, identifying the different areas of improvement.
AJ
Related Maths GCSE answers
All answers ▸5 students are in a maths class and 10 students are in a physics class. The mean mark of the maths class is 90 and the mean mark of the physics class is 85. Work out the mean mark of both classes.
A graph of a linear equation passes through 2 points, (2,9) and (-3,-1). Find the equation of the line in the form y=mx+c.
Calculate the length of the hypotenuse of a right-angled triangle when the other two sides measure 6cm and 9cm.
Calculate 7.6 x 32.5