Question

(c2 - 3a)(3a + c2) - решите!

Answer 1

$(c^2-3a)(3a+c^2)=c^4-9a^2$

Answer 2

To solve the expression (c2 - 3a)(3a + c2), we can use the FOIL method, which stands for "First, Outer, Inner, Last."

First, we multiply the first terms of each binomial:

(c2) * (3a) = 3ac2

Next, we multiply the outer terms:

(c2) * (c2) = c4

Then, we multiply the inner terms:

(-3a) * (3a) = -9a2

Finally, we multiply the last terms:

(-3a) * (c2) = -3ac2

Putting it all together, we get:

(c2 - 3a)(3a + c2) = 3ac2 + c4 - 9a2 - 3ac2

Simplifying the expression, we can see that the 3ac2 and -3ac2 terms cancel each other out:

(c2 - 3a)(3a + c2) = c4 - 9a2

Therefore, the final answer is:

c4 - 9a2