Question

$x2 + 11x + 30x$
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Answer 1

Answer:

x²+11x+30x

=x²+41x Answer.....

Step-by-step explanation:

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Answer 2

Correct question:

Find the roots of x² + 11x + 30

Solution:

Using the quadratic formula

x = - b±√b² - 4ac/2a

Where

• b → coefficient of x = 11
• a → coefficient of x² = 1
• c → Constant term = 30

→ x = - 11 ±√11² - 4(1)(30)/2(1)

→ x = - 11 ± √121 - 120/2

→ x = - 11 ±√1/2

→ x = -11 + 1/2 or -11 - 1/2

→ x = -10/2 or -12/2

→ x = - 5 or - 6

Hence, x = - 5 or - 6

#LearnMore! :

Quadratic polynomial : x² + (sum of roots)x + product of roots

Quadratic Formula : - b ±√∆ or D/2

∆ or D : It is known as determinant ∆ = b² - 4ac