Question

show that x=4/5 is a zero of 5x³-4x² - 5x+4​

Answer 1

Answer:

p(4/5)=5(4/5)³-4(4/5)²-5(4/5)+4

         =5×72/125-4×16/25-4+4

         =72/25-72/25

         =0

Answer 2

Step-by-step explanation:

X = 4/5,

• 5x*3 - 4x*2 - 5x + 4
• 5(4/5)*3 - 4(4/5)*2 - 5(4/5) +4
• 320/125 - 64/25 - 20/5 + 4
• 320 - 320 - 500 +500/125

Ans=0

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