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Rasek [7]
3 years ago
15

Factor the polynomial using the pattern. x2 - 9x + 20

Mathematics
2 answers:
mixer [17]3 years ago
7 0

Answer: To factorize the quadratic expression

x2−9x+20, one must find the two numbers that add together to give 9, and multiply together to give 20. Those two numbers are 4 and 5, which factor into the expression

(x−4)(x−5). The signs are due to the fact that the first sign in the expression is a positive, which tells us that both signs must be the same, and the first sign is a negative, which means that, due to the positive sign in the expression, both signs are negative. To do the opposite, expanding, one must multiply

x by x, to get x2, add together 4 and 5 to get 9, and multiply them to get 20.

brilliants [131]3 years ago
7 0

Answer:

Answer: To factorize the quadratic expression

x2−9x+20, one must find the two numbers that add together to give 9, and multiply together to give 20. Those two numbers are 4 and 5, which factor into the expression

(x−4)(x−5). The signs are due to the fact that the first sign in the expression is a positive, which tells us that both signs must be the same, and the first sign is a negative, which means that, due to the positive sign in the expression, both signs are negative. To do the opposite, expanding, one must multiply

x by x, to get x2, add together 4 and 5 to get 9, and multiply them to get 20.

Step-by-step explanation:

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Mrac [35]

Answer:

234

Step-by-step explanation:

45+72=117

117x2=234

6 0
3 years ago
64p=-16+8p-40p^2 solve by factoring.​
marusya05 [52]

Answer:

Solution set = {(-1,-2/5)]

Step-by-step explanation:

64p=-16+8p-40p²

64p-8p=-16-40p²

56p+16+40p²=0

40p²+56p+16=0

8(5p² +7p+2)=0

5p²+5p+2p+2=0

5p(p+1) +2(p+1)=0

(p+1)(5p+2)=0

p+1=0;   5p+2=0

p=-1;      p=-2/5

6 0
3 years ago
Help this is harder than life itself
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12

Step-by-step explanation:

6 0
3 years ago
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Of the 75 cars that Lindsay saw pass on the highway, 15% had an out-of-state license plate. How many had an out-of- state licens
loris [4]

Answer:

11.25

Step-by-step explanation:

4 0
3 years ago
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Lines m and n are parallel Line m is described by the equation y = 40 +2. Line n contains the point (1, -3). Which of the follow
strojnjashka [21]

Answer:

B)Oy+ 3 = 4(x - 1)

Equation of the straight line   y +3 = 4( x-1)

Step-by-step explanation:

<u><em>Explanation:-</em></u>

<u><em>Step(i):-</em></u>

Given that the equation   y = 4x +2

and given that the point (1,-3)

The equation of the parallel line to the given line

                       ax +by +k=0

                       4x-y +k=0

This line is passing through the point (1,-3)

                  ⇒ 4(1) -(-3) +k=0

                  ⇒   4+3 +k=0

                          7 +k=0

                             k =-7

The equation of the Parallel line  4x-y -7 = 0

<u><em>Step(ii):-</em></u>

Given that the slope m = 4 and the point (1,-3)

Equation of the straight line

             y - y₁ = m(x-x₁)

             y -(-3) = 4( x-1)

            y +3 = 4( x-1)

5 0
3 years ago
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