Question

Q.1 Find the following product : (a) (1 -a) (1 +a+a square)
(b) (0.2x+0.3y) (0.04x² -0.06xy +0.9x²)​

Answer 1

Answer:

(a)

Step-by-step explanation:

(a) (1-a)(1+a+a²)

=1+a+a²-a-a²-a³

= 1-a³

(b) (0.2x+0.3y)(0.04x²-0.06xy+0.9x²)

= 0.008x³-0.012x²y+0.18x³+0.012x²y-0.018xy²+ 0.27x²y

= 0.188x³+0.27x²y-0.018xy²