Question

3-2x(5-2x)=4x+x-30 con prueba por favor
3[2x-(3x-1)]=x+1
(x-15)=3(x-19)

Answer 1

3-2x(5-2x)=4x+x-30
3 - 10x + 4(x^2) = 5x - 30
4(x^2) - 10x - 5x + 30 + 3 = 0
4(x^2) -15x + 33 = 0
[x ( 4x - 15)] + 33 = 0
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3[2x-(3x-1)]=x+1
3[2x - 3x + 1] = x + 1
3[-x + 1] = x + 1
-3x + 3 = x + 1
-3x - x + 3 - 1 = 0
-4x + 2 = 0
2 ( -2x + 1) = 0
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(x-15)=3(x-19)
x - 15 = 3x - 57
x - 3x - 15 + 57 = 0
-2x + 42 = 0
2 ( -x + 21) = 0
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Espero que te ayude estás respuestas