What if AD = BC and CF = de?
Here we want to prove, for all a,b,c,d,e,f ?Z, with b 6= 0, d 6= 0, and f 6= 0, that if ad = bc and cf = de then af = be. Well, if ad = bc and cf = de then adcf = bcde.
What is a + B + C?
– N?u ph??ng th?m trình b?c nh? có: a + b + c = 0 (cùng v?i a, b, c là các thông s? c?a ph??ng trình b?c 2, a không gi?ng 0) thì nghi?m c?a ph??ng th?m trình là: x1 = 1; x2 = c/a. – N?u pmùi h??ng trình b?c hai có: a – b + c =0 (cùng v?i a, b, c là nh?ng h? s? c?a ph??ng trình b?c 2, a không gi?ng 0) thì nghi?m ph??ng th?m trình là:
What is the meaning of (a+b)2?
What is the meaning of (a+b)^2? consider a square and the length of the side of a square is is a+b. formula to find a area of a square is (“a^2? or “ (side of a square)^2?). here the side of a square is a+b so inorder to find the area of that square is (a+b)^2. Hence (a+b)^2 is basically a formula to calculate a “area of a square”.
What is the difference between ADCF and AF?
Well, if ad = bc and cf = de then adcf = bcde. We are given d 6= 0. So if c 6= 0, then we can divide by cd and get af = be. On the other hand, c = 0 then ad = 0 and de = 0.
Tableau de classement des armes