Question

7x^-12x+5=o solve this quadratic equation​

Answer 1

Answer:

7x² - 12x + 5 = 0

COMPARING WITH STANDARD FORM

ax² + by + c = 0

a=7 , b=-12 , c=5

b² - 4ac

= (-12)² - 4 (7)(5)

= 144 - 28 (5)

= 144 - 140

= 4

Step-by-step explanation:

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Answer 2

Answer:

${7x}^{2} - 12x + 5 = 0$

${7x}^{2} - (7 + 5)x + 5 = 0$

${7x}^{2} - 7x - 5x + 5 = 0$

$7x(x - 1) - 5(x - 1) = 0$

$(x - 1)(7x - 5) = 0$

$(x - 1) = 0 \: and \: (7x - 5) = 0$

x = 1 and 7x = 5

x = 1 and x = 5/7

Ans. 1 and 5/7

Hope it helps.