Question

(b-5a)² evaluate this term​

Answer 1

Step-by-step explanation:

(a-b)²= a²-2ab+b²

as per above formula,

(b-5a)²=b²-2(b)(5a)+(5a)²

=b²-10ab+25a²

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Answer 2

Step-by-step explanation:

Given that

❤️( b - 5a ) ²

❤️use identity

❤️ ( a - b ) ² = a² + 2.a.b - b²

❤️Here

a = b

b = 5a

❤️b² - 2 . b . 5a + ( 5a )²

❤️b² - 10ab + 25a