2bc + 8b - 3c - 12 is an expression, not an equation or inequality. It cannot, therefore have "an answer".
d = a - 2bc
d=a-2bc
The method used is usually to isolate the value being solved for on the left hand side of the equation so, when we are told that a = 2bc - d we switch the equation around and get 2bc - d = a Then we add 'd' to each side and get 2bc = a + d Then we divide both sides by '2b' and get c = (a + d) / 2b
(2a + b)(2c + d)
(2a + b)(2c + d).
(b-c)(a+b)-ac
d = a - 2bc
BC' + BC' = 2BC'
No. 1a and 3d are linear, but 2bc is not. ■
a2+b2+c2-2ab+2bc-2ca
ab-2ac+b^2-2bc
d=a-2bc
ac + 2ad + 2bc + 4bd = a(c + 2d) + 2b(c + 2d) = (a + 2b)(c + 2d) Now expand to confirm your answer: c(a + 2b) + 2d(a + 2b) = ac + 2bc + 2ad + 4bd ≡ ac + 2ad + 2bc + 4bd
The method used is usually to isolate the value being solved for on the left hand side of the equation so, when we are told that a = 2bc - d we switch the equation around and get 2bc - d = a Then we add 'd' to each side and get 2bc = a + d Then we divide both sides by '2b' and get c = (a + d) / 2b
3ab + 3ac + 2b2 + 2bc = 3a(b + c) + 2b(b + c) = (3a + 2b)(b + c)
(2a + b)(2c + d)
(a + 2b)(c + 2d)