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mart [117]
1 year ago
6

1. What is the remainder when x³+4x2-2x+1 is divided by x+2 1. What is the remainder when x³ + 4x2-2x + 1 is divided by x + 2​

Mathematics
1 answer:
ELEN [110]1 year ago
3 0

Answer:

Remainder is 13

Step-by-step explanation:

You can apply the remainder theorem here. You just equate the divisor to 0, then substitute the x-value in the expression.

x^3 + 4x^2 - 2x + 1       \\       then, x+2=0\\x=-2

substitute:

-2^3 + 4(-2)^2-2(-2) + 1 =13

Therefore, the remainder is 13

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a chord is drawn 3 cm away from the centre of a circle of radius 5 cm. calculate the length of the chord​
lara [203]

Answer:

8 cm

Step-by-step explanation:

the 3 cm line from the chord to the center of a circle is a leg of a right triangle which perpendicularly bisects the chord into two equal halves

draw the hypotenuse of the right triangle from the center of the circle to the endpoint of the chord. This is a radius measuring 5 cm.

find the missing leg of the right triangle

a^2= c^2- b^2

a^2= 25-9

a^2=16

a=4

this is only the measurement of half the chord. To find the full length of the chord multiply by two

4*2=8 cm

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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