Question

Mathswatch: Factorise x^2-42^2

Answer 1

Answer:

$x^{2} -1764$

Step-by-step explanation:

1) Evaluate the exponent:

$x^{2} -1*42^2\\x^{2} -1*1764$

2) Multiply the numbers:

$x^{2} -1*1764\\x^{2} -1764$