Question

Question 15

Classify the expression 7x3 + 2x2− 9x + 1 as a monomial, binomial, trinomial or polynomial.

monomial

binomial

trinomial

polynomial

Question 16

Multiply x to the 1 fourth power times x to the 5 eighths power

x to the 1 half power

x to the 3 eighths power

x to the 7 eighths power

x to the 5 over 32 power

Question 17

Identify all of the following solutions of square root of x plus 8 end root minus 6 equals x.

x = −4

x = −7

x = −4 and x= -7

none of the above

Answer 1

@math&ing001

Answer 2

mono = 1st degree
bi = 2nd degree
tri = 3rd degree

Answer 3

so its trinomial?

Answer 4

Yep !

Answer 5

#16?

Answer 6

\[x ^{a}*x ^{b}=x ^{a+b}\]

Answer 7

im confuseddddddd

Answer 8

Consider a=1/4 and b=5/8

Answer 9

so , x^5/32

Answer 10

@math&ing001

Answer 11

Do not multiply, add

Answer 12

7x3 + 2x2− 9x + 1 is not a trinomial. It does NOT have 3 terms. It has more than 3 terms so it is polynomial (poly means many)

Answer 13

so its x^1/2

Answer 14

1/4 + 5/8 = 1/2 ?

Answer 15

6/12 simplified is 1/2

Answer 16

Those are fractions we add them like this : \[\frac{ 1 }{ 4 }+\frac{ 5 }{ 8 }=\frac{ 2+5 }{ 8 }=\frac{ 7 }{ 8 }\]

Answer 17

where did you get 2+5?

Answer 18

And btw I made a mistake be4. As @jim_thompson5910 said monomial, binomial... do not depend on degree but on the number of terms the polynomial has.

Answer 19

& #17?

Answer 20

To add fractions you need to have the same denominator.

Answer 21

So 1/4 = 2/8. That's how we got 1/4 + 5/8 = 2/8 + 5/8 = (2+5)/8 = 7/8

Answer 22

& so it is polynomial ?

Answer 23

yeah

Answer 24

ok & #17?

Answer 25

Square root of x plus 8 end root minus 6 equals x. What do you mean by 'end' ?

Answer 26

"square root of x plus 8 end root minus 6 equals x" looks like it translates to

\[\Large \sqrt{x+8} - 6 = x\]

Answer 27

Yes^

Answer 28

@math&ing001

Answer 29

Get 6 to the other side then put everything to the power of 2 and solve for x.
Should look like x+8 = (x+6)^2

Answer 30

Oh and check for extraneous solutions !

Answer 31

i dont know.. this is hard):

Answer 32

Did you study how to solve quadratics ?

Answer 33

no.

Answer 34

Well you can't do this kind of exercises if you haven't.

Answer 35

Last resort is you just plug in the solutions they gave you in choices and see if they check...

Answer 36

so its -7
?

Answer 37

Check again !

Answer 38

ok... -4?

Answer 39

yep : )

Answer 40

For the first part, a monomial has just one TERM, a binomial has two terms, a trinomial has 3 terms and for more than three terms just polynomial.