Question

factorise the following x2+3x-10​

Answer 1

x^2+3x-10

(x-2) (x+5)

x=2 or x=-5

Answer 2

⚽ Question ⚽

• factorise the following x²+3x-10

⚽ Solution ⚽

• x² + 3x - 10 = 0
• = x² + 5x - 2x - 10 = 0
• = x ( x + 5 ) - 2 ( x + 5 ) = 0
• = ( x + 5 ) ( x - 2 ) = 0
• = x = 2 , -5

⚽ Verification ⚽

for x = 2,

• = 2² + 3(2) - 10
• = 4 + 6 - 10
• = 10 - 10
• = 0

hence, x= 2 verified

for x = -5

• = -5² + 3(-5) - 10
• = 25 -15 -10
• = 25 -25
• = 0

hence, x= -5 verified

Thus, x = 2,-5 verified ✔️