Given: 2(a2+ab)+3-ab⇒ 2a2+2ab+3-ab⇒ 2a2+2ab-ab+3⇒ 2a2+ab+3⇒ 2(5)2+(5)(-3)+3⇒ 2×25-15+3 [putting a=5, b=-3]⇒ 50-15+3⇒ 38
Convert the given fractional numbers to per cents.