Solve the problem.
-$$[ ( 4 x + 3 ) + 7 y ] ^ { 2 }$$
A) $16 x ^ { 2 } + 24 x + 9 + 56 x y + 42 y + 49 y ^ { 2 }$
B) $16 x ^ { 2 } + 12 x + 9 + 28 x y + 21 y + 49 y ^ { 2 }$
C) $16 x ^ { 2 } + 56 x y + 49 y ^ { 2 }$
D) $16 x ^ { 2 } + 24 x + 56 x y + 42 y + 49 y ^ { 2 }$

Question

Quizplus · Accepted Answer

Using the formula for the square of a binomial, we have:$$[(4x + 3) + 7y]^2 = (4x + 3)^2 + 2(4x + 3)(7y) + (7y)^2$$$$= 16x^2 + 24x + 9 + 56xy + 42y + 49y^2$$

Solve the Problem [(4x+3)+7y]2[ ( 4 x + 3 ) + 7 y ] ^ { 2 }[(4x+3)+7y]2

Solve the Problem $[ ( 4 x + 3 ) + 7 y ] ^ { 2 }$