Question

A(b-4)-b(a-3) при а=2,5 b=1/3

Answer 1

Ab - 4a - ab + 3b = -4a + 3b = - 10 + 1 = 9)))

Answer 2

2,5(1/3-4)-1/3(2,5-3)=2,5×1/3-4×2.5-2.5×1/3+1/3×3=-4×2.5+1/3×3=-10+1=-9

Answer 3

To evaluate the expression A(b-4) - b(a-3) when a = 2.5 and b = 1/3, simply substitute the values of a and b into the expression and perform the calculations step by step:

A(b-4) - b(a-3)

Let's plug in the values:

a = 2.5 b = 1/3 (which is approximately 0.3333)

Now, substitute the values into the expression:

A(0.3333 - 4) - 0.3333(2.5 - 3)

Now perform the calculations:

A(-3.6667) - 0.3333(-0.5)

Finally, let's say A = 1 (since you didn't specify a value for A):

1(-3.6667) - 0.3333(-0.5)

Now calculate:

-3.6667 + 0.16665

Finally, we get the result:

-3.50005

So, when a = 2.5 and b = 1/3, the expression A(b-4) - b(a-3) evaluates to approximately -3.50005.