Question

A) 169p⁴qr÷ (-13pq³r)
b) 3(x +2y) +5x - (y + 7)
c (3x –4)( 5x- 1)

Answer 1

a) 169 p⁴qr 13×13×p×p³×q×r 13p³

- ------------- = - ---------------------- = - ------

13pq³r 13×p×q×q²×r q²

b) 3(x+2y)+5x-(y+7)

3x+6y+5x-y-7

8x+5y-7

c) (3x-4)(5x-1)

5x(3x-4) -1(3x-4)

15x-20-3x+4

12x-16