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Need help plz help me

Need help plz help me-example-1
User Kudlur
by
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2 Answers

3 votes

Answer:

x = - 6, x = - 5

Explanation:

Given

x² + 11x + 30 = 0

Consider the factors of the constant term ( + 30) which sum to give the coefficient of the x- term.

The factors are + 6 and + 5, since

6 × 5 = + 30 and 6 + 5 = + 11, hence

(x + 6)(x + 5) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 6 = 0 ⇒ x = - 6

x + 5 = 0 ⇒ x = - 5

User Stuart Nichols
by
8.6k points
4 votes

Explanation:

how could we get 30x^2?

6x × 5x

so,

x^2 +6x+5x+30=0

x (x+6) +5 (x+6)=0

(x+6)(x+5)=0

(x+6)=0/(x+5)=0

x=-6 or x=-5

User Dmitry Shvetsov
by
8.3k points

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