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3 years ago

I need to know how to do 24×85 in multiplication vertical

Mathematics

1 answer:

I am Lyosha [343]3 years ago

6 0

Answer:

2,040

Step-by-step explanation:

×85=

5×4=20 carry the 2 about the 2 in 24

5×2=10+ the 2 you carried =120

bring a 0 down under the 0 in 120 cross out the 5

now do 8×4=32 carry the 3 above the two in 24 now

8×2=16+ the 3 carried=19

1120+1920=2,040

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Step-by-step explanation:

We can use the Rational Root Test.

Given a polynomial in the form:

$a_nx^n +a_{n- 1}x^{n - 1} + … + a_1x^1 + a_0 = 0$

Where:

- The coefficients are integers.

- $a_n$ is the leading coeffcient ( $a_n\neq 0$ )

- $a_0$ is the constant term $a_0\neq 0$

Every rational root of the polynomial is in the form:

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For the case of the given polynomial:

$2x^7+3x^5-9x^2+6=0$

We can observe that:

- Its constant term is 6, with factors 1, 2 and 3.

- Its leading coefficient is 2, with factors 1 and 2.

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$\frac{p}{q}=\frac{\pm(1,2,3,6)}{\pm(1,2)}=\pm\frac{1}{1}, \pm\frac{1}{2},\pm\frac{2}{1},\pm\frac{3}{1}, \pm\frac{3}{2}$

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Answer:

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I need to know how to do 24×85 in multiplication vertical ​

I need to know how to do 24×85 in multiplication vertical