find the square of (b-7)2
Answers
Answered by
5
Answer:
b² + 49 - 14b
Step-by-step explanation:
( a - b )² = a² + b² - 2ab Identity / formula
( b - 7 )² = b² + 7² - ( 2 ) ( 7 ) ( b )
( b - 7 )² = b² + 49 - 14b
Answered by
0
Answer:
let us consider (b-7)² = (a - b)²
where a = b, b = 7
(a - b)² = a² - 2ab +b²
similarly,
(b-7)² = b²- 14b + 49
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