Question

Using a suitable identity evaluate9.7×9.8

Answer 1

Answer:

9.7 × 9.8 = 95.06

Step-by-step explanation:9.7 × 9.8

→(10-0.3) × (10-0.2)

→10² +(-0.3-0.2)(10) + (-0.3)(-0.2)

→100 - 5 + 0.06

→95.06

(Identity used:(x+a)(x+b)=x²+(a+b)(x)+ab)