Question

(6b-5)(9b+5)-6b(6b-5) при b=2.2

Answer 1

Сначала упростим :

(6b - 5)(9b + 5) - 6b(6b - 5) = (6b - 5)(9b + 5 - 6b) = (6b - 5)(3b + 5)

Если b = 2,2 , то :

(6 * 2,2 - 5)(3 * 2,2 + 5) = (13,2 - 5)(6,6 + 5) = 8,2 * 11,6 = 95,12

Answer 2

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Answer 3

To calculate the expression (6b-5)(9b+5)-6b(6b-5) when b=2.2, we simply substitute the value of b into the expression and perform the arithmetic.

Let's do the calculations step by step:

1. Substitute b with 2.2 in the expression (6b-5)(9b+5): (6 * 2.2 - 5)(9 * 2.2 + 5)

2. Calculate the values inside the parentheses: (13.2 - 5)(19.8 + 5)

3. Perform the arithmetic: (8.2)(24.8)

4. Calculate the final result: 8.2 * 24.8 = 203.36

So, when b=2.2, the value of the expression (6b-5)(9b+5)-6b(6b-5) is 203.36.