Find the value of ( 0.75 * 0.75 * 0.75 - 0.001 ) / ( 0.75 * 0.75 - 0.075 + 0.01)
Find the value of ( 0.75 * 0.75 * 0.75 - 0.001 ) / ( 0.75 * 0.75 - 0.075 + 0.01)
Answer/Solution
0.845
Steps/Work
(0.75*0.75*0.75-0.001)=0.75^3 -0.1^3
0.75*0.75-0.075+0.01=0.75^2-0.1^2
a^3-b^3=(a+b)(a^2-ab+b^2)
so after cancellation remainning term is (a+b) i.e 0.75+0.1=0.85
nearly to 0.845
ANSWER:A
0.75*0.75-0.075+0.01=0.75^2-0.1^2
a^3-b^3=(a+b)(a^2-ab+b^2)
so after cancellation remainning term is (a+b) i.e 0.75+0.1=0.85
nearly to 0.845
ANSWER:A