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![p²- 460P + 42000 = 0
P = [- b ±( ˅b² - 4ac) ] / 2a
P = [-460 ±( ˅ 460² - 4 x 42000 ) ] / 2
= (460 ± 208. 806 ) / 2
= (460 ...](https://image.slidesharecdn.com/mathsseminarquadratic1-150914103714-lva1-app6892/75/Maths-seminar-quadratic-1-17-2048.jpg?cb=1669135389)
![Coefficients are: a = 1, b = -10 and c = -4
Quadratic Formula: x = [ -b ± √(b2-4ac) ] / 2a
Expand everything:
3(x2-4) = 15...](https://image.slidesharecdn.com/mathsseminarquadratic1-150914103714-lva1-app6892/75/Maths-seminar-quadratic-1-25-2048.jpg?cb=1669135389)
![Quadratic Formula: x = [ -b ± √(b2-4ac) ] / 2a
Put in a, b and c: x = [ -(-10) ± √((-10)2-4×1×(-4)) ] / (2×1)
Solve: x = [...](https://image.slidesharecdn.com/mathsseminarquadratic1-150914103714-lva1-app6892/75/Maths-seminar-quadratic-1-26-2048.jpg?cb=1669135389)
