Question

URGENTE!!!

Resolva as equações incompletas ​

Answer 1

Resposta:

f) x=0

x= - 7/5

g)

h)

Explicação passo-a-passo:

f) 5x²+7x=0

x(5x+7)=0

x=0

5x+7=0

5x=-7

x= - 7/5

g) 16x²-4x=0

4(4x-x)=0

4(4x-1)x=0

x=0

4x-1=0

4x=1

x=1/4

h) 6x²-36x=0

6(x²-6x)=0

x²-6x=0

$x = \frac{ -b± \sqrt{ {b}^{2} - 4ac} }{2a } \\ \\ x = \frac{ - ( - 6)± \sqrt{ { (- 6)}^{2} - 4 \times 1 \times 0 } }{2 \times 1}$

$\\ x = \frac{6±6}{2} \\ \\ x = \frac{6 + 6}{2} \\ \\ x = \frac{6 - 6}{2}$

x=6

x=0