4 years ago

Use the geometric model to factor x^2-9

Mathematics

1 answer:

inysia [295]4 years ago

8 0

Answer:

(x - 3)(x + 3)

Step-by-step explanation:

a² - b² = (a - b)(a + b)

x² - 9 = (x - 3)(x + 3)

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Answer:

$2l + 2w = 48$

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3 years ago

What is the value of y when x=9

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cross multiply
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Find the smallest value of $x$ such that $x^2 + 10x + 25 = 8$.

Mashutka [201]

Answer:

-5 -√8 or ≈ -7.83

Step-by-step explanation:

<u>Solving the quadratic equation, to find its roots:</u>

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x+5 = ± √8 ⇒ There are 2 roots
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<u>The smallest root is:</u>

x= -5 - √8 ≈ -7.83

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