What is the value of 42-2(3 times 5+1)

Mathematics

1 answer:

Angelina_Jolie [31]3 years ago

8 0

42-2 = 40

3x6 = 18

its either 58 or 720 since Im confused about if theres paranthesis or not

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I don’t understand this one

Masja [62]

Answer:

see below

Step-by-step explanation:

Put -1 where x is in each expression and evaluate it.

You will find that the expression is zero when the numerator is zero. And you will find the numerator is zero when it has a factor that is equivalent to ...

(x +1)

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Evaluating the first expression, we have ...

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This first expression is one you want to "check."

You can see that the reason the expression is zero is that x+1 has a sum of zero. You can look for that same sum in the other expressions. (The tricky one is the one with the factor (x -(-1)). You know, of course, that -(-1) = +1.)