Question

Find each the following products:
(a) (a –3a + 7) X (2a + 3)
(b) 3p X (2p2 – pq + 49)​

Answer 1

Answer:

Step-by-step explanation:

The identities to be used are. (a + b )2 = a2 + 2ab + b2 ...

Factorize: x2 + 8x + 16.

Observe the expression and identify the identity to be used. There are 3 terms in the expression. ...

Comparing the coefficients we get. a = x and 2b = 8 or b = 4.

Answer 2

Step-by-step explanation:

(a) (a-3a+7) (2a+3)

-»a(2a+3) - 3a(2a+3) +7(2a+3)

-»2a2+3a-6a2-9a+14a+21

-» -4a2+8a+21 (multiply by -1)

or 4a2-8a-21

(b) 3p (2p2-pq+49)

-» 6p3-3p2q+ 147p