Question

31.3. 2)64-b^24)2,89-d^26)100/121-у^28)t^2-400/44110)-16+49y^212)64/81t^2-3614)25/64b^2-81/1​

Answer 1

Пошаговое объяснение:

2) (8-b)(8+b)

4) (1,7-d)(1,7+d)

6)(10/11-y)(10/11+y)

8) (t - 20/21)(t+20/21)

10)-(16-49y^2)= -(4-7y)(4+7y)

12) (8/9t-6)(8/9t+6)

14)(5/8b-9/1)(5/8b+9/1)

Answer 2

It seems like you've provided a long mathematical expression with various operations. To simplify this expression, I'll break it down step by step:

Expression:

31.3 - 2(64 - b^24) * 2.89 - d^26 * (100/121 - у^28) * t^2 - 400/441 * 10 - 16 + 49y^212 * 64/81t^2 - 3614 * 25/64b^2 - 81/1

Step 1: Simplify the innermost expressions:

• 64 - b^24 = 64 - b^24
• 100/121 - у^28 = 100/121 - у^28
• 64/81t^2 = 64/81t^2

Step 2: Multiply and divide:

• 2(64 - b^24) = 2(64 - b^24)
• d^26 * (100/121 - у^28) = d^26 * (100/121 - у^28)
• 400/441 * 10 = 400/441 * 10
• 49y^212 * 64/81t^2 = 49y^212 * 64/81t^2
• 25/64b^2 - 81/1 = 25/64b^2 - 81

Now, we have:

31.3 - 2(64 - b^24) * 2.89 - d^26 * (100/121 - у^28) * t^2 - 400/441 * 10 - 16 + 49y^212 * 64/81t^2 - 25/64b^2 + 81

Step 3: Perform multiplication and division:

• 2(64 - b^24) = 128 - 2b^24
• d^26 * (100/121 - у^28) = (d^26 * 100/121) - (d^26 * у^28)
• 49y^212 * 64/81t^2 = (49/81)y^212t^2

Now, we have:

31.3 - (128 - 2b^24) * 2.89 - (d^26 * 100/121 - d^26 * у^28) * t^2 - 400/441 * 10 - 16 + (49/81)y^212t^2 - 25/64b^2 + 81

Step 4: Distribute and simplify further:

31.3 - 257.92 + 5.78b^24 - (d^26 * 100/121 - d^26 * у^28) * t^2 - 400/441 * 10 - 16 + (49/81)y^212t^2 - 25/64b^2 + 81

Now, the expression is in a simplified form. If you have specific values for the variables b, d, and y, you can substitute them in to compute the final result.