For the first question you need to find the formula for the rectangle, after you did that fill it in. and find your answer.
67 is the correct answer trust me i just answered and got it correct.
Flip the equation.<span>k=<span><span>5x</span>+<span>14</span></span></span>
X^2 + 16x + ?
a^2 + 2ab + b
(a + b)^2 which is a perfect square.
To find b to determine the last value, you divide 16x by 2x.
so:
b = 8
the last value would be 8^2 which is 64.
Hence answer is C - 64