3 years ago

Help me find x please!!

1 answer:

6 0

There appear to be 2 similar triangles here. See if you can figure out where the following comes from:

Equation of ratios:

3 x
------ = ------
4 7.5

Then 225 = 4x, and x = 5.6
25

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F/4 + 16 < 49<br> Solve the inequality

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$f$ < $132$

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$Greetings!$

$I'm~Isabelle~Williams~and~I~will~be~answering~your~question!$

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3 years ago

We want to find the zeros of this polynomial p(x)= ( x^2-1)(x^2-5x+6)

Scrat [10]

Answer:

see explanation

Step-by-step explanation:

To find the zeros let p(x) = 0 , that is

(x² - 1)(x² - 5x + 6) = 0

Factorise each factor

x² - 1 ← is a difference of squares and factors as (x - 1)(x + 1)

x² - 5x + 6 = (x - 2)(x - 3), thus

(x - 1)(x + 1)(x - 2)(x - 3) = 0

Equate each factor to zero and solve for x

x - 1 = 0 ⇒ x = 1

x + 1 = 0 ⇒ x = - 1

x - 2 = 0 ⇒ x = 2

x - 3 = 0 ⇒ x = 3

The zeros are x = ± 1, x = 2, x = 3

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3 years ago