Question

Factorise
1) 25a^2 - 962

2) 8 m3 - 64

3) 27x^3-8y^3 - 1252^3-90 xyz​

Answer 1

Answer:

1) 25 a² - 961 + 1

(5a)² - (31)² + 1

by formula ಠ- b² = (a+b)(a-b)

(5a+31)(5a-31) +1

2) 8 m³ - 64

(2m)³ - 4³

by formula a³- b3 = (a-b)( a² + ab + b²)

we get , (2m-4){(2m)² + 2m×4 + 4²}

(2m - 4) (4m²+8m+16)

Answer 2

Step-by-step explanation:

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