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sattari [20]
3 years ago
7

Find the product of (x − 7)^2. Basically Simplify It

Mathematics
1 answer:
Viktor [21]3 years ago
8 0

Answer:

<h2>(x - 7)² = x² - 14x + 49</h2>

Step-by-step explanation:

\bold{METHOD\ 1:}\\\\\text{Use}\ (a-b)^2=a^2-2ab+b^2\\\\(x-7)^2=x^2-2(x)(7)+7^2=x^2-14x+49\\\\\bold{METHOD\ 2:}\\\\\text{We know:}\ a^2=a\cdot a\\\\(x-7)^2=(x-7)(x-7)\\\\\text{Use FOIL:}\ (a+b)(c+d)=ac+ad+bc+bd\\\\=(x)(x)+(x)(-7)+(-7)(x)+(-7)(-7)\\\\=x^2-7x-7x+49\qquad\text{combine like terms}\\\\=x^2-14x+49

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In complete sentences, explain how to draw a double number line representing a 1:4 ratio.
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<u>Answer:</u>

<u>ratios equivalent to 1/3=2/6,3/9</u>

<u></u>

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The answer is C: (-3,-1)

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Given

The attached figure

Required

x and y

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<em></em>

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