2 answers:
Answer:
x = - 6, x = - 5
Step-by-step 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
Step-by-step explanation:
how could we get 30x^2?
6x × 5x
<em>so</em><em>,</em>
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
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