Question

Solve this equation using quadratic formula 25x^2+30x+7=0 Brainliest answer will be awarded.

Answer 1

Step-by-step explanation:

see that

25x²+30x+7=0

a=25

b=30

c=7

D=a²-c²

D=25²-7²

D =625-49

D=576

D=24²

X=b-√d

X=30-24

X=6

Answer 2

HLW,

ANSWER:

• QUADRATIC EQN FORMULA:

$x = \frac{ - b + - \sqrt{ {b}^{2} - 4ac } }{2a}$

• SOLUTION:

$putting \: values \: \\ x = \frac{ - 30 + - \sqrt{ {(30)}^{2} - 4 \times 25 \times 7} }{2 \times 25} \\ x = \frac{ - 30 + - \sqrt{200} }{50} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ x1 = - \frac{3}{5} + \frac{2 \sqrt{50} }{50} \: \: \: \: \: \: \: \: \: \: \: \: x2 = - \frac{3}{5} - \frac{2 \sqrt{50} }{50}$

$x1 = \frac{7}{5 } \: \: \: \: \: \: \: \: \: \: \: \: \: \: x2 = - \frac{13}{5}$

HOPE THIS IS HELPFUL...