Q15 of 34 Page 14

Factories:

(x + y)(2x + 5) – (x + y)(x + 3)

(x + y)(2x + 5) – (x + y)(x + 3)


= (x + y){(2x + 5) – (x + 3)}


= (x + y)(2x + 5 – x – 3)


= (x + y)(2x – x + 5 – 3)


= (x + y)(x + 2)


So,


We get,


(x + y)(2x + 5) – (x + y)(x + 3) = (x + y)(x + 2)

More from this chapter

All 34 →
13

Simplify

(s2t + tq2)2 – (2stq)2

 14

Factories:

2a + 6b – 3(a + 3b)2

 16

Factories:

x2 – x(a + 2b) + 2ab

 17

Evaluate {(7.8)2 – (2.2)2}.