Breaking News

1. Tentukan akar – akar persamaan kuadrat dengan menggunakan rumus ABC a. x²+7x+6=0

1. Tentukan akar – akar persamaan kuadrat dengan menggunakan rumus ABC
a. x²+7x+6=0

Jawaban yang benar adalah
-6 atau -1

Pembahasan :

Konsep
Akar-akar persamaan kuadrat
ax²+bx+c = 0
Dengan rumus ABC
x₁₂ = (-b± √(b²-4.a.c))/(2a)

Diketahui
x²+7x+6= 0
a = 1
b = 7
c = 6

x₁₂ = (-b± √(b²-4.a.c))/(2a)
x₁₂ = (-7± √(7²-4.1.6))/(2.1)
x₁₂ = (-7± √(49-24))/2
x₁₂ = (-7± √25 )/2
x₁₂ = (-7± 5)/2
x₁ = (-7+5)/2 = -2/2 = -1
x₂ = (-7-5)/2 = -12/2 = -6

Jadi akar-akar persamaan kuadrat adalah -6 atau -1

 

Pelajari lebih lanjut

Pelajari lebih lanjut di Google News

ilmuantekno.com

Rekomendasi lainnya :

Baca Juga :  The Sahara Desert in North Africa is big, very big. It covers a third of the whole continent, measuring 3.3 million square miles - it is almost the same size as the USA. It is the largest hot desert in the world. The highest temperature ever recorded there was 57.8°c. In a single day, the temperature can range from below freezing to 50°c. These extreme of hot and cold, combined with the dry, dusty wind, make the Sahara a place where only few plants and animals can survive. It is stated in the text that few plants and animals can survive because ....
IlmuanTekno
© Copyright 2025, All Rights Reserved