X+x=-24\\ x\cdot x = 144\\ \\ 2x=-24 \ \ /: 2\ \\x^2=144 \\ \\x=-12\\( -12)^2 =144\\ \\x=-12\\ \\144 =144 \\ \\ Answer :\ it \ is \ ( -12)
Use this formula a2 − b2 = (a + b)(a − b)
<span>(x+1)^2-(x-1)^2 in this case, a = x+1, b = x-1</span>
<span>= [(x+1) + (x-1)] * [(x+1) – (x-1)]</span>
=(x +1 + x – 1) *(x +1 – x +1)
= 2x * 2
<span>=4x</span>
Answer:

Step-by-step explanation:
Your solution is correct (See explanation):
Area (A) of a circle is

Where

Differentiate both sides with respect to t

<em>This is so because, we have to differentiate A on the left hand side and r on the right hand side because </em>
<em> is a constant</em>
<em />
<em>Hence, your solution is correct and and</em>
