Question

if (x-4) and (x-5) are the factor of x^2+lx+m then find the value of l and m

please give me answer ​

Answer 1

Step-by-step explanation:

roots are 4 and 5

• 4²+4x+m........(1)
• 5²+5x+m........(2)
• 16+4x+m=25+5x+m
• -x=9
• x=-9
• m=-55,-70

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