Calculate A + B + C from the given expression: 216+134= ABC
Subtract: (i) 5ab+4ac−6a+15c−15 from 10ab+22bc−13a−14b−16c−24 (ii) 5a2b+10b2c2−10b2c−21ab+32 from 50−20b2c2−4bc−ac−5ab. [2 MARKS]
If the mean of the data given below is 18, find R ?
2ab+3bc+4ba−2cb+3ab+8bc equals