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< B.5 14. Multiply & simplify: (3x + 4)(x + 1)​

User Beyonddc
by
7.9k points

2 Answers

7 votes

Answer:


3x^2+7x+4

Explanation:

Using FOIL (First, outer, inner, last)

First, we multiply 3x and x to get
3x^2 (First)

We then multiply 3x and 1 to get
3x (outer)

Then 4 and x to get
4x (Inner)

Then multiply 1 and 4 to get
4 (last)

Since the quadratics are all positive, we add all the terms together to get:


3x^2+3x+4x+4. Since 3x and 4x are like terms, we add them together and simplify to get:


3x^2+7x+4

And since we can't simplify any further, that's our answer!

Hope this helps :D

User Bruno Faria
by
8.7k points
4 votes

Answer:


3x^(2) +7x+4

Explanation:

To simplify the double bracket, you can use a Foil method ( you can search it to see detailed explanation )

(3x + 4 )( x + 1)


3x^(2) +7x+4

Hope that is right, ask any questions if unsure :)

User JF It
by
7.6k points

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