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3 years ago

Simplify.

Mathematics

2 answers:

aleksklad [387]3 years ago

6 0

Hey there!

$\bold{(3x^2 + 2x + 7x^3)+(10x^2 + 6x + 9)}$

Firstly, combine your like terms

$\bold{3x^2,10x^2}$
$\bold{2x,6x}$
$\bold{7x^3}$
$\bold{9}$

$\bold{7x^3\times(3x^2+10x^2)+(2x+6x)+(9)}$
$\bold{3x^2+10x^2=13x^3}$
$2x+6x=8x$
$\boxed{\boxed{\bold{Answer:A)7x^3+13x^2+8x+9}}}$ $\checkmark$

Good luck on your assignment and enjoy your day!

~ $\bold{LoveYourselfFirst:)}$

Dafna1 [17]3 years ago

4 0

Answer:

A) 7x^3 + 13x^2 + 8x + 9

Step-by-step explanation:

(3x^2 + 2x + 7x^3) + (10x^2 + 6x + 9)

I like to line them up vertically

7x^3 +3x^2 + 2x

+ (10x^2 + 6x + 9)

-----------------------------------

7x^3 +13x^2 +8x +9

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Using the quadratic formula, the solutions are:

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