Question

Evaluate: b2 - 9(b - 1)2 , if b = 11/10
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Answer 1

Step-by-step explanation:

(11/10)2-9×(11/10-1)2

answer yourself this sum and get your answer okkk

Answer 2

Answer:

Formula used

• x²-y²=(x+y)(x-y)

Step-by-step explanation:

b²-9(b-1)²

b²-(3(b-1))²

b²-(3b-3)²

(b+3b-3)(b-3b+3)

(4b+3)(-2b+3)

-(4b+3)(2b-3)

$- (4( \frac{11}{10}) + 3)(2( \frac{11}{10}) - 3)$

-(22/5+3)(11/5-3)

-(37/5)(-4/5)

((37×4)/25)

(148/5)

hope it helps