Question

Factorise x^2 - 3x - 1 = 0
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Answer 1

Answer:

Explanation:

ax2+bx+c=0

1x2+3x+−1=0

a=1

b=3

c=−1

x=−b±√b2−4ac2a

x=−3±√32−4×1×−12×1

x=−3±√9−42

x=−3±√52

x=−3±2.2362

x1=−3−2.2362

x1=−5.2362

x1=−2.618

x2=−3+2.2362

x2=−0.7642

x2=−0.382

Answer 2

Answer:

Step-by-step explanation:

→ x² - 5x + 2x - 10

→ x(x²/x - 5x/x) + 2(2x/2 - 2*5/2)

→ (x-5)(x+2)