S sunny123 New member Joined Jul 28, 2019 Messages 11 Aug 5, 2019 #1 This is a copy paste from my math text book. I am getting answer as 11, while the book is showing as 25 My expansion is as follows 2(0-1)-1(8-1)+5(4-0) 2(-1)-1(7)+5(4) -2-7+20 = 11 Please correct me if I am doing some mistake
This is a copy paste from my math text book. I am getting answer as 11, while the book is showing as 25 My expansion is as follows 2(0-1)-1(8-1)+5(4-0) 2(-1)-1(7)+5(4) -2-7+20 = 11 Please correct me if I am doing some mistake
pka Elite Member Joined Jan 29, 2005 Messages 11,978 Aug 5, 2019 #2 You missed the fact \(\displaystyle -(-1)=1,~2(0-1){\large\color{red}+}(8-1)+5(4-0)\)
S sunny123 New member Joined Jul 28, 2019 Messages 11 Aug 5, 2019 #3 pka said: You missed the fact \(\displaystyle -(-1)=1,~2(0-1){\large\color{red}+}(8-1)+5(4-0)\) Click to expand... hi, i think i may have got it. Thanx for help
pka said: You missed the fact \(\displaystyle -(-1)=1,~2(0-1){\large\color{red}+}(8-1)+5(4-0)\) Click to expand... hi, i think i may have got it. Thanx for help
