(-7w^2=2w-1)-(-5w^2+3w-2)

Answer 1

Starting with (-7w^2=2w-1), we can simplify by adding 5w^2 to both sides and by adding 1 to both sides:

-7w^2 + 5w^2 = 2w - 1 + 1

Simplifying further, we get:

-2w^2 = 2w

Dividing both sides by -2w, we get:

w = 0 or w = -1

Now, starting with (-5w^2+3w-2), we can simplify by subtracting 2 from both sides:

-5w^2 + 3w - 2 + 2 = 0

Simplifying further, we get:

-5w^2 + 3w = 0

Factoring out w, we get:

w(-5w + 3) = 0

So w = 0 or w = 3/5

Putting it all together, we have:

(-7w^2=2w-1)-(-5w^2+3w-2)

= (-7w^2+5w^2) - (2w-3w) - (1+2)

= -2w^2 - w - 3

Now, plugging in our values for w, we get:

w = 0 -> -2(0)^2 - (0) - 3 = -3

w = -1 -> -2(-1)^2 - (-1) - 3 = -4

w = 3/5 -> -2(3/5)^2 - (3/5) - 3 = -4.68 (rounded to two decimal places)

Therefore, our final answer is:

(-7w^2=2w-1)-(-5w^2+3w-2) = {-3 if w = 0, -4 if w = -1, -4.68 if w = 3/5}

Answer 2

(-7w^2=2w-1)-(-5w^2+3w-2)
12w^2+5w+1
-2w^2-5w-1
-2w^2-5w+1
-12w^2-5w-3

Answer 3

The correct answer is:

-2w^2-5w-1