Question

Simplify (4x2 - 2x + 5) + (2x2 - 2x - 8)
a: 2x2 + 13
b: 6x2 - 4x - 3
c: 6x2 - 4x + 13
d: 6x2 - 3

Answer 1

B

Answer 2

thanks

Answer 3

Np

Answer 4

look at the first and last terms in each bracket

add the first pair
that will give you the first term in the answer
add the last pair - that will give you the last term in the answer

there is only one answer that works

@Janu16
the poster cannot know if you are right if you just post the answer

@sistrunk23
I suggest you check the answer - it is quite likely wrong

Answer 5

Step 1 :

Raise x to the 2nd power
Exponentiation :

Equation at the end of step 1 :

(((4•(x2))-2x)+5)+(((2•x2)-2x)-8)
Step 2 :

Raise x to the 2nd power
Exponentiation :

Equation at the end of step 2 :

(((4 • x2) - 2x) + 5) + (2x2 - 2x - 8)
Step 3 :

Simplify 4x2-2x+5 + 2x2-2x-8
Trying to factor by splitting the middle term

3.1 Factoring 6x2-4x-3

The first term is, 6x2 its coefficient is 6 .
The middle term is, -4x its coefficient is -4 .
The last term, "the constant", is -3

Step-1 : Multiply the coefficient of the first term by the constant 6 • -3 = -18

Step-2 : Find two factors of -18 whose sum equals the coefficient of the middle term, which is -4 .

-18 + 1 = -17
-9 + 2 = -7
-6 + 3 = -3
-3 + 6 = 3
-2 + 9 = 7
-1 + 18 = 17

Observation : No two such factors can be found !!
Conclusion : Trinomial can not be factored

Final result :

6x2 - 4x - 3

Answer 6

Im correct