3 years ago

Factorize a^2–b^2 Hence find the exact value of 2557^2-2547^2

Mathematics

2 answers:

motikmotik3 years ago

8 0

Answer:

51,040.

Step-by-step explanation:

a^2–b^2 = (a - b)(a + b) so

2557^2-2547^2 = (2557-2547)2557+2547)

= 10 * 5104

= 51,040.

statuscvo [17]3 years ago

4 0

Answer:51040

Step-by-step explanation:a^2-b^2=(a+b)(a-b)

2557^2-2547^2

(2557-2547)(2557+2547)

(10)(5104)

51040

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