Question

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Answer 1

Respuesta:

3x²+13x-10 = 0

3x²+15x-2x-10 = 0

3x(x+5)-2(x+5) = 0

(3x-2)(x+5) = 0

x1 = 2/3 y x2 = - 5

10b²-19b = 15

10b²-19b-15 = 15-15

10b²-19b-15 = 0

10b²-25b+6b-15 = 0

5b(2b-5)+3(2b-5) = 0

(5b+3)(2b-5) = 0

b1 = - 3/5 y b2 = 5/2

15y²+2y-8 = 0

15y+12y-10y-8 = 0

3y(5y+4)-2(5y+4) = 0

(3y-2)(5y+4) = 0

y1 = 2/3 e y2 = - 4/5

4x²+16x+16 = 0

4x²+8x+8x+16 = 0

4x(x+2)+8(x+2) = 0

(4x+8)(x+2) = 0

x1 = - 8/4 y x2 = - 2

x1 = - 2 y x2 = - 2

35x²+34x = 21

35x²+34x-21 = 21-21

35x²+34x-21 = 0

35x²-15x+49x-21 = 0

5x(7x-3)+7(7x-3) = 0

(7x-3)(5x+7) = 0

x1 = 3/7 y x2 = - 7/5

2x²+34x = -60

2x²+34x+60 = -60+60

2x²+34x+60 = 0

2x²+4x+30x+60 = 0

2x(x+2)+30(x+2) = 0

(2x+30)(x+2) = 0

x1 = - 30/2 y x2 = -2

x1 = -15 y x2 = - 2