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16.07.2019 •
Mathematics
What is the product of the binomials below?
(2x +5)(4x +4)
a. 9x2 +28x + 20
b. 8x2 +28x+9
c. 8x1 +28x+20
d. 9x2 +28x+9
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Ответ:
The correct answer is 8x^2+28x+20.
Step-by-step explanation:
(2x+5)(4x+4)
Multiply the first bracket with each element of second bracket:
=4x(2x+5)+4(2x+5)
=8x^2+20x+8x+20
Now solve the like terms:
=8x^2+28x+20
Thus the correct answer is 8x^2+28x+20
Ответ:
Length: Width: Area:
199
3721
5525
7321
919