Math, asked by pawansaini75, 1 year ago

using identity, evaluate 1.05*9.5


alfazkherani: The question should be 10.5*9.5 to use the identity a^2 - b^2
kapil913: 8th class question right
kapil913: Am i right
kapil913: If i am right then question is wrong because i had done this problem
kapil913: @alfezkherani is correct
pawansaini75: yes u r right
pawansaini75: please tell me right question

Answers

Answered by Anonymous
25
1.05 × 9.5

 = (1 + 0.05) \times (10 -0 .5) \\  \\  = 10  - 0.5 + 0.5 - 0.025 \\  \\  = 10 - 0.025 \\  \\  = 9.975

swiftangel90: Thuch identity is used here????
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