Math, asked by sbabusri2364, 2 months ago


Find the value of t if the value of 3x²+5x-2t equals to 8 when x = -1​

Answers

Answered by Anonymous
4

Answer:

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Step-by-step explanation:

3x²+5x-2t = 8 \\  \\ 3( - 1) {}^{2}  + 5( - 1) - 2t = 8 \\  \\ 3(1) + 5( - 1) - 2t = 8 \\  \\ 3 - 5 - 2t = 8 \\  \\ 2t = 3 -5 - 8 \\  \\ 2t =  - 10 \\  \\ t =  \frac{ - 10}{2}  \\  \\ t =  -5

Verification

3x^2+5x-2t=8 \\  \\putting \:\: t = -5\: \:and \:\:x = -1 \:\:in\: \:LHS \:\:of\:\: the \:\:equation\\  \\3(-1)^2+5(-1)-2(-5)\\  \\3(1)+5(1)-2(-5)\\  \\3-5+10\\  \\-2+10\\  \\8\\  \\= RHS

Hence verified that t = -5

Answered by hanumansri1997
0

Answer:

t = -5

it is the value of t that you can see in image

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