Two students, Carlos and Sophie, factored the trinomial -4x2 − 10x + 6. Sophie factored it as -2(2x − 1)(x + 3) and Carlos factored it as (x + 3)( -4x + 2). Indicate which student factored the trinomial completely and which student did not, and explain why.

Sophie factor the trinomial completely.

Carlos didn't factor the trinomial completely.

Step-by-step explanation:

Let's factor the expression.

Notice that all the terms of are divisible by -2, so let's factor -2 out:

Now, we can factor step by step:

Step 1. Split the middle term

Step 2. Group similar terms

Step 3. Factor each parentheses

Step 4. Factor the common binomial out

Finally, we can put everything together:

The same result as Sophie's!

We can conclude that Sophie factored the trinomial completely, whereas Carlos did not.

14 ft 7 inches

step-by-step explanation:

since each model inch corresponds to 25 real inches, 7 model inches will correspond to

7×25" = 175"

at 12" per foot, that is 14 feet, 7 inches.

a rotation about point l

step-by-step explanation:

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