Q: State the domain and range of y2x( 2)-8x plus 4?

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The sum is 28x

68 + 28x - 28 = 236 28x + 68 - 68 -28 + 28 = 236 - 68 + 28 28x = 196 x = 7

.740

5x + 23x + 10 = 28x + 10( ? ? ? )

7x+7=28x 28x-7x=7 21x=7 x=3

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49x2+28x+4 = (7x+2)(7x+2) when factored

The sum is 28x

68 + 28x - 28 = 236 28x + 68 - 68 -28 + 28 = 236 - 68 + 28 28x = 196 x = 7

what is -12X squared +28X - 15? i figured it out myself. its (-6X + 5)(2X - 3).

.740

5x + 23x + 10 = 28x + 10( ? ? ? )

7x+7=28x 28x-7x=7 21x=7 x=3

x=35

14x(x + 2)

It can be simplified to: 9-28x

4x2 + 28x + 49 = 4x2 + 14x + 14x + 49 = 2x(2x + 7) + 7(2x + 7) = (2x + 7)(2x + 7) or (2x + 7)2

4x(4x^2 - 6x + 7)