Can someone please help me?

Question

simplify: 2+3(4+5)3 ... 3 is a power.

Like ive tryed soo many ways but i just cant get it.

And I need help on

-5x+17+7x+17=-4

A -19
B 15
C 19
D -15

Answer 1

2 + 3(4 + 5)³

Do the 4 + 5 first (because it's in parentheses)

2 + 3(9)³

Now, cube the 9

2 + 3(729)

Now, multiply 3 and 729

2 + 2187

Finally, add 2 + 2187

2 + 2187 = 2189

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

-5x + 17 + 7x + 17 = -4

2x + 34 = -4

2x = -38

x = -19

That's answer A

Answer 2

2 + 3(4+5)^3
Firstly, add the contents of the brackets.
4 + 5 = 9
Hence
2 + 3(9)^3
Next, raise 9 to the power 3, that is 9 x 9 x 9 = 729
So
2 + 3(729)
When a number is inside the brackets is shown with a number outside the brackets, in this case 3(729), it means 3 x 729.
So multiplying 3 x 729 = 2187
Finally,
2 + 2187 = 2189 (The ANSWER).

Next problem.
-5x + 17 + 7x +17 = -4
Firstly, remove all the numerical terms to the right of the 'equals' sign, not forgetting to alter the sign in front of the number.

-5x + 7x = -4 - 17 - 17
Now 'add' the terms on the LHS and he RHS.

-5x + 7x = 2x &
-4 -17 -17 = -38
So the overall equation reads

2x = -38
Now divide both sides by '2'.
x = -19
So Answer 'A' is the correct answer.

Answer 3

2+3(4+5)^3

Remember your order of operations:PEMDAS
2+3(9)^3
u then cube 9
2+3(729)
u then multiply 729 by 3
2+2187
add your 2
2189

on the second:
-5x+17+7x+17=-4
first: combine your like terms:
2x+34=-4
subtract 34 from both sides
2x=38
divide 2 from both sides
x=19

Answer 4

do the calculation in the bracket first
2+3*9^3=2+3*729=2+2187=2189
the second problem...
-5x+17+7x+17=-4
=>(-5x+7x)=-4 - 17 - 17
=>2x= - 38
=>x= -19
A is the answer

Answer 5

2+3(4+5)3
2+ 3(9)^3 = 2189

-5x+17+7x+17=-4
-5x +7x = -4 -17 -17
2x = -38
x = -19

Answer 6

problem 1 is either 2+3(9)3 or 5(9)3
and the answer to the second is a

Answer 7

2+3(4+5)^3 = 2189

A is correct.

Answer 8

for simplify : 2189
and the second is A