Question

slove using formula and complete the activity
3m sq + 2m -7=0​

Answer 1

Step-by-step explanation:

• 3m square +2m- 7=0
• 3m square +2m=0+7
• (9m+ 2m) square=7

Answer 2

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✪QUESTION✪:-

slove using formula and complete the activity

3m² + 2m -7=0

✪ANSWER✪:-

➠3m² + 2m -7 = 0

It is in the form of ax²+bx + c = 0

here,

• a = 3
• b = 2
• c = -7
• x = m

QUADRATIC FORMULA :-

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

➠$m = \frac{ - (2)± \sqrt{ ({2)}^{2} - 4(3)( - 7)} }{2( - 7)}$

➠$m = \frac{ - 2 \: ± \sqrt{4 + 84 } }{ - 14}$

➠$m = \frac{ - 2± \sqrt{81} }{ - 14}$

➠$m = \frac{ - 2 + 9}{ - 14} \: \: m = \frac{ - 2 - 9}{ - 14}$

➠$m = \frac{ - 7}{ - 14} \: \: \: m = \frac{ - 11}{ - 14}$

➠$m = \frac{1}{2} \: \: \: m = \frac{11}{14}$