Question

What are the solutions of the quadratic equation below? 4x2 - 30x + 45 = 0

Answer 1

try and find 20 numbers whose product is 45 and another 2 whose product is 4 which when added give -30

Answer 2

* 2 numbers

Answer 3

Do yo know the Quadratic formula? If yes, just use that.

If not, then split-the-middle-term.

Try finding 2 numbers, which have
the product as 180 &
the sum as -30

xy = 180
x+y = -30

Try finding x and y.

Answer 4

looks like you can't find those factors so you need to use the quadratic formula

Answer 5

the zeros will not be whole numbers

Answer 6

\[4 x^2-30 x+45=0\]
\[x=\frac{ 30 \pm \sqrt{\left( -30 \right)^2-4*4*45} }{ 2*4 }\]
=?

Answer 7

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