Question

P(x)=2xsquare-5x+7a find the value of A

Answer 1

Answer:

Step-by-step explanation:

2x²-5x+7a = 0

A = 2 , b= -5 , c= 7a

B²- 4ac = 0

(-5)² - 4×2×7a = 0

25 - 56a = 0

25 = 56a

A=25/56

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Answer 2

⚫ f (x)=2x^2-3x+7a

putting x=2

➡ 2 (2)^2-3×2+7a=0

➡8-6+7a=0

➡7a=-2

➡ a= -2/7