Ask question

Ask question

All categories

2 years ago

10

Simplify: 2+5(x+3)- (2x-7)(x+2) PLEASE SHOW WORK!!!

2 answers:

Leto [7]2 years ago

7 0

Answer:

4x+7-2x²

Step-by-step explanation:

2+5(x+3)- (2x-7)(x+2)

First we have to divide them into 2 parts

part 1= 2+5(x+3)

part 2= (2x-7)(x+2)

Then, we have to solve them in parts

First part1= 2+5(x+3)

=2(x+3)+5(x+3)

=2x+6+5x+15

=2x+5x+15+6

=7x+21

OR SIMPLE WAY OF DOING PART1

2+5(x+3)

=7(x+3)

=7x+21

Then part2= (2x-7)(x+2)

=2x(x+2)-7(x+2)

=2x²+4x-7x-14

=2x²-3x-14

THEN JUST SIMPLIFY

7x+21-2x²-3x-14

=7x-3x+21-14-2x²

=4x+7-2x²

svetoff [14.1K]2 years ago

4 0

Answer:

2+5(x+3)- (2x-7)(x+2)

7(x+3)- (3x+4x-7x-14)

(7x+21)-(7x-7x-14)

(7x+21)-(14)

7x+21-14

=7x+7

<h2><em>Please mark as brainliest answer!!!!</em></h2>

<em></em>

You might be interested in

Slope formula question (Algebra 2)

DaniilM [7]

$\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ 5}}\quad ,&{{ 3}})\quad 
% (c,d)
&({{ 3}}\quad ,&{{ 1}})
\end{array}
\\\\\\
% slope = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{1-3}{3-5}\implies \cfrac{-2}{-2}\implies 1$

7 0

2 years ago

Sqrt(2x-6)=3-x<br> Solve for x

soldi70 [24.7K]

Answer:

x = 3

Step-by-step explanation:

$\sqrt{2x - 6} = 3 - x$

Square both sides of the equation

$2x - 6 = (3 - x)^{2} = 9 - 6x + x^{2} \\$

$x^{2} - 8x + 15 = 0\\$

(x - 3)(x - 5) = 0

x = 3 or 5

Now, you must always check your results because a result may not satisfy the original equation.

If x = 3, then $\sqrt{2x - 6} = \sqrt{2(3) - 6} = \sqrt{6 - 6} = \sqrt{0} = 0$ and 3 - x = 3 - 3 = 0

So 3 satisfies the original.

If x = 5, then $\sqrt{2(5) - 6} = \sqrt{10 - 6} = \sqrt{4} = 2$ , but 3 - x = 3 - 5 = -2. Therefore, 5 does NOT satisfy the original equation.

That means that x = 3 is the solution to the equation.

5 0

2 years ago

In a random sample of 400 customers at a fast food restaurant, it was determined that 124 customers ordered a salad. If the rest

charle [14.2K]

The answer is 2/3 because the cat and the mouse had a child name catouse and then he built a space ship but yea the answer is really 2/3

8 0

3 years ago

Read 2 more answers

The size of a large milkshake is 1.4 times the size of a medium milkshake.write 1.4 as a percent

Tju [1.3M]

$1.4=1.4 \times 100\%=140\%$

6 0

3 years ago

Read 2 more answers

Liam has some dimes and quarters.He has 7 more quarters than he has dimes. If liam has 15 coins in all, which is the value of hi

alexgriva [62]

$3.15
11 quarters = $2.75
4 dimes = $0.40
$0.40+$2.75=$3.15

4 0

2 years ago

Read 2 more answers