Solve for t. d= -16t^2 + 4t

I’m suck on this problem for some reason

Thank you!

t = 1/8 ± √(1 − 4d) / 8

Step-by-step explanation:

d = -16t² + 4t

Move everything to the left side:

16t² − 4t + d = 0

Solve with quadratic formula:

t = [ -(-4) ± √((-4)² − 4(16)(d)) ] / 2(16)

t = [ 4 ± √(16 − 64d) ] / 32

t = [ 4 ± 4√(1 − 4d) ] / 32

t = [ 1 ± √(1 − 4d) ] / 8

t = 1/8 ± √(1 − 4d) / 8

step-by-step explanation:

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