Question

plz help me to solve this equation

Answer 1

Answer:

Step-by-step explanation:

a) x^2+3x-4=0

If x=1

(1)^2+3(1)-4=0

0=0

1 is a root

b) n^2+4n=0

If n= -2

(-2)^2+4(-2)=0

-4!=0

-2 is not a root

Answer 2

Answer:

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a) p(x) = x² + 3x - 4

➢ p(x) = 1

➡ p(1) = (1)² + 3(1) - 4

➡ p(1) = 1 + 3 - 4

➡ p(1) = 4 - 4

➡ p(1) = 0

b) p(n) = n² + 4n

➢ p(n) = -2

➡ p(-2) = (-2)² + 4(-2)

➡ p(-2) = 4 - 8

➡ p(-2) = -4

Therefore, it is solved....

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Step-by-step explanation:

℘ℓḙᾰṧḙ ՊᾰԻк Պḙ ᾰṧ ♭Իᾰ!ℵℓ!ḙṧт ✌✌✌