akitchen10
30.10.2021 •
Mathematics
Kiyo and his friend are designing a rectangular garden with a 2-foot-wide path around it. They want the length of the garden to be 3 times as long as the width. Kiyo and his friend both write quadratic functions to find the area of the garden and path. which one has the correct model? Explain.
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Ответ:
the difference of two squares is a special form that has a factorization worth memorizing.
a² - b² = (a - b)(a + b)
your equation can be factored as
x² - 16 = 0
(x - 4)(x + 4) = 0
the zero product rule tells you the solutions are the values of x that make these factors zero: x=4, x=-4.