Answer:
(3x - 7y)(3x + 7y)
Step-by-step explanation:
9x² - 49y² ← is a difference of squares and factors in general as
a² - b² = (a - b)(a + b)
here 9x² = (3x)² ⇒ a = 3x and 49y² = (7y) ⇒ b = 7y
9x² - 49y²
= (3x)² - (7y)² = (3x - 7y)(3x + 7y)
<u>Given:</u>
Polynomial = P(x) = 3x² + kx + 6
Factor of the ablove polynomial = (x+3)
<u>To </u><u>Find</u><u>:</u>
Value of K, for which (x+3) become the factor of P(x) = 3x² + kx + 6
<u>Solu</u><u>tion</u><u> </u><u>:</u>
Now,
x + 3 = 0
⇒x = (-3)
So,
As (x+3) is a factor so x = (-3) is one root of the polynomial.
Therefore,
P(-3) = 0
→ P(-3) = 3(-3)² + k(-3) + 6 = 0
→ 3(9) - 3k + 6 = 0
→ 27 - 3k + 6 = 0
→ 27 + 6 - 3k = 0
→ 33 - 3k = 0
→ - 3k = -33
→ k = -33 ÷ -3
→ k = 11
- <u>Hence,For the value of k = 11, (x+3) is a factor of 3x²+ kx + 6</u>
<h2><u>V</u><u> </u><u>E</u><u> </u><u>R</u><u> </u><u>I</u><u> </u><u>F</u><u> </u><u>I</u><u> </u><u>C</u><u> </u><u>A</u><u> </u><u>T</u><u> </u><u>I</u><u> </u><u>O</u><u> </u><u>N</u><u> </u><u>:</u></h2>
3x²+ kx + 6, by putting the value of k = 11 and taking -3 as root the remainder should be zero
→ 3x²+ 11x + 6
→ 3(-3)² + 11(-3) + 6
→ 3(9) - 33 + 6
→ 27 - 33 + 6
→ 27 + 6 - 33
→ 33 - 33
→ 0
<u>Hence verified</u><u> </u><u>!</u>
Answer:38
Step-by-step explanation:
they were born in 1933 and 1971 minus 1933 is 38.
I would solve for y on the top one and sub it into the bottom one.
y=-2x+8
(12/5, 16/5)
Answer:
Part A- Y=18%x
Part B- After four years the price will be 10,850.923 or $10,850.92
Step-by-step explanation:
Depending on how many years the price will go down by 18%.