The quadratic expression x2 – 2x – 35 can be factored into (2+5)(x - 7). Which ordered pairs represent the zeros of this expression's related quadratic function?
A (5,0) and (-7,0)
B (-5,0) and (7,0)
C (0,-5) and (0,7)
D (0,5) and (0, - 7)

a

step-by-step explanation:

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answer: (-8,4) are the coordinates of a

step-by-step explanation:

let the side of square abcd is x .

thus the area of square abcd is .

now, by the diagram area of triangle ead= 1/2 × ea × ad = 1/2 × ea × x

( because ad is the side of square)

and, according to the question,

the areas of square abcd and right ead are equal.

⇒

⇒ea=2x

thus, ea: ab=2: 1

therefore, point a divides line segment eb into the ratio 2: 1.

⇒ by sectional formula coordinates of a are,

=

=

=(-8, 4)

thus the coordinates of a are (-8,4)