Question

1. 0,64-4k² 2. 3m²+9m³ 3. 5x²+3x 4. 2,25p²-x² 5. 9+6a²b+a⁴b² 6. 7x²-0,28x 7. 8ab+b²+16a²

Answer 1

0,16(2-5k)(2+5k)
3m2(1+3m)
x(5x+3)
(1,5p-x)(1,5p+x)
(3+a2b)2
0,28x(25x-1)
(b+4a)2

Answer 2

Sure! It looks like you've provided a list of mathematical expressions. I can help you simplify or evaluate these expressions if you'd like. Here are the simplifications for each expression:

1. 0,64 - 4k²: This expression appears to be a subtraction. To simplify it further, you can subtract 4k² from 0.64. The simplified expression is: 0.64 - 4k².

2. 3m² + 9m³: This expression consists of terms involving m raised to different powers. It cannot be simplified any further unless you have specific values for m.

3. 5x² + 3x: This expression is a quadratic polynomial with terms involving x. It is already simplified.

4. 2.25p² - x²: Similar to expression 1, this expression is a subtraction. You can subtract x² from 2.25p² to simplify it further. The simplified expression is: 2.25p² - x².

5. 9 + 6a²b + a⁴b²: This expression contains terms involving a and b raised to different powers. It is already simplified.

6. 7x² - 0.28x: This expression is a quadratic polynomial with terms involving x. It is already simplified.

7. 8ab + b² + 16a²: This expression consists of terms involving a and b. It is already simplified.

If you have any specific values for the variables (k, m, x, p, a, b), I can provide numerical evaluations for the expressions as well.