Question

(...-10а)(...+...)=9с^2-...

Answer 1

Как  1 из вариантов возможных решений:

(3c-10a)*(3c+10a)=9c^2-100*a^2  (Формула разности квадратов)

Answer 2

It appears that you're looking for expressions that, when multiplied together, result in the expression 9c^2 minus some unknown value (represented by "..."). To find such expressions, we need to expand the given expression and simplify it.

Let's start by expanding the left side of the equation:

(???? - 10????)(???? + ????) = 9c^2 - ...

Now, we can use the FOIL method (First, Outer, Inner, Last) to expand the left side:

(???? - 10????)(???? + ????) = ????^2 + ???????? - 10???????? - 10????????

Now, we can simplify this expression:

????^2 + ???????? - 10???????? - 10????????

To match it with 9c^2 - ..., we need to set the coefficients of ????^2 and ????x to zero and make sure that the constant terms on both sides are the same. This will allow us to determine the values of ???? and ???? that satisfy the equation.

1. Set the coefficient of ????^2 to zero:

???? = 0

2. Set the coefficient of ????x to zero:

-10???? = 0

Now, solving for ????:

-10???? = 0 ???? = 0

So, in order to satisfy the equation (???? - 10????)(???? + ????) = 9c^2 - ..., the values of ???? and ???? should be:

???? = 0 ???? = 0

This means the expression (???? - 10????)(???? + ????) would become:

(???? - 10(0))(???? + 0) = ????^2

So, the equation would be:

????^2 = 9c^2 - ...

The "..." in the equation represents an unknown value that depends on the specific context or the values of ???? and ????.