Which expression is equivalent to (2x2 + 4x - 7)(x-3)?
оо
o a. x(2x2 + 4x - 7) - 3
o b. -3x(2x2 + 4x - 7)
o c. x/2x2 + 4x + 7) + 3(2x2 + 4x - 7)
o d. (2x2 + 4x - 7)(x) + (2x2 + 4x )

D

Step-by-step explanation:

It isn't the most efficient way to solve the problem, but the other 3 are incorrect.

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)