Question 58 (a)
Subtract:
−7p2qr from −3p2qr.
Question 58 (b)
−a2−ab from b2+ab
Question 58 (c)
−4x2y−y3 from x3+3xy2−x2y.
Question 58 (f)
−2a2−2b2 from −a2−b2+2ab.