Answer:
5b-2=18
Step-by-step explanation:
(2√5+3√7)(2√5+3√7) = (2√5)(2√5) + (2√5)(3√7) + (3√7)(2√5) + (3√7)(3√7)
(2√5+3√7)(2√5+3√7) = 4(5) + 6√35 + 6√35 + 9(7)
(2√5+3√7)(2√5+3√7) = 20 + 12√35 +63
(2√5+3√7)(2√5+3√7) = 83 + 12√35
Answer: 83 + 12√35
<span>Hope this helps
when </span>she<span> started with </span>5 feet<span>, </span>she then cuts<span> off 3 and </span><span>3/4 feet</span><span> to </span>make<span> a </span>hair bow, being left with 5<span> - </span><span>33/4</span><span> = 1</span>1<span>/4 </span>feet<span>. </span>Then she cuts<span> off </span>5/6 feet<span> to </span>make<span> a </span>border<span> on a </span>scrapbook page, being left with. 11<span>/4 - </span>5/6<span> = </span>5<span>/4 - </span>5/6<span>. = </span>15<span>/12 - </span>10<span>/12. = </span>5<span>/12 </span>feet<span>. If </span>she<span> needs to </span>cut<span> 2 </span>1/3-feet<span> pieces, </span>she<span> will need 2(</span>1/3<span>) = </span>2/3 feet<span>.</span>
We can factor the equation into:
(x-10)*(x-3)
Therefore the roots are:
X = 10
X = 3