Question

(a) (2x + p - c)² - (2x - p + c)²
Simplify the following:​

Answer 1

Answer:

8x • (p - c)

Step-by-step explanation:

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Step  1  : 1.1    Evaluate :  (2x+p-c)2   =  4x2+4xp-4xc+p2-2pc+c2   1.2    Evaluate :  (2x-p+c)2   =  4x2-4xp+4xc+p2-2pc+c2  

Step  2  :Pulling out like terms :

2.1     Pull out like factors :

   8xp - 8xc  =   8x • (p - c)  

Final result : 8x • (p - c)

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Answer 2

i. (a + 2)(a – 1)

= a² + (2 – 1) a + 2 × (-1)

..[∵ (x + A) (x + B) = x² + (A + B)x + AB]

= a² + a – 2

I think this is the solution for this question