Question

Evaluate:
10.2 x 9.8

Answer 1

Answer:

(9.8 \times 10.2) = ((10-0.2) \times(10 + 0.2))(9.8×10.2)=((10−0.2)×(10+0.2))

\Rightarrow((10 - 0.2) \times (10 + 0.2))⇒((10−0.2)×(10+0.2))

By using the identity given below, we get,

(a - b) (a + b) = a^{2} - b^{2}(a−b)(a+b)=a

2

−b

2

\Rightarrow \left(10^{2} - 0.2^{2}\right)⇒(10

2

−0.2

2

)

\Rightarrow (100 - 0.04)⇒(100−0.04)

\Rightarrow 9.8 \times 10.2 = 99.96⇒9.8×10.2=99.96

Step-by-step explanation:

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Answer 2

Answer:

10.2*9.8= (10+.2)(10-.2)=10^2-(.2^2)=(100-.o4)=99.96