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tester [92]
3 years ago
9

What Is the product of the polynomials below? (7x^2+2x+4)(2x+5)

Mathematics
2 answers:
Mandarinka [93]3 years ago
5 0

Answer:14x^3+39x^2+18x+20

Step-by-step explanation:

(7x^2+2x+4)(2x+5)

14x^3+35x^2+4x^2+10x+8x+20

Add like terms

14x^3+39x^2+18x+20

Gnoma [55]3 years ago
4 0

Answer:

14x^3+39x^2+18x+20

Step-by-step explanation:

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Eighty-five more than the square of a number is the same as the square of the quantity that is 17 less than the number. What is
mario62 [17]
We can turn this word problem into the following equation:
x^2 + 85 = (x - 17)^2
  x^2 + 85 = x^2 - 34x + 289
           -85                       -85
_______________________
      x^2 = x^2 - 34x + 204                    
     +34x         +34x
_______________________
 x^2 + 34x = x^2 + 204
-x^2             -x^2
____________________
       34x = 204
Divide 34 on both sides
      x = 6.
The number is 6.
5 0
3 years ago
Bob had 2 apples Sam took 1 how many is left
Brilliant_brown [7]
1 apple is left..
2-1=1
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3 years ago
MP Find the Error Katrina states that
nika2105 [10]

Answer:

3.5 X 10^4 < 2.1 x 10^6

Step-by-step explanation:

3.5 X 10^4 < 2.1 x 10^6

The first thing we look at is the exponent

10 ^4 is less than 10^6

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If the exponents are the same, then we look at the numbers out front

4 0
3 years ago
1/3 x = 1/6 write answer as a fraction
Andrews [41]

Step-by-step explanation:

1/3x=1/6

x/3=1/6

cross multiply

6x=3

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6 0
3 years ago
Read 2 more answers
What is 2 radical 15 squared
aleksandrvk [35]
2\sqrt{15^2}=2\cdot15=30\\\\\\2\sqrt{15^2}=2\cdot\left(15^2\right)^\frac{1}{2}=2\cdot15^{2\cdot\frac{1}{2}}=2\cdot15=30



\left(2\sqrt{15}\right)^2=2^2\cdot\left(\sqrt{15}\right)^2=4\cdot15=60\\\\\left(2\sqrt{15}\right)^2=2^2\cdot\left(\sqrt{15}\right)^2=4\cdot\left(15^\frac{1}{2}\right)^2=4\cdot15^{\frac{1}{2}\cdot2}=4\cdot15^1=4\cdot15=60
8 0
3 years ago
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