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tresset_1 [31]
3 years ago
15

Find the zeros of the following

Mathematics
1 answer:
julia-pushkina [17]3 years ago
4 0

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

13 ) Go...

f(x) =  {x}^{2}  - 2x

0 =  {x}^{2}  - 2x

{x}^{2}  - 2x = 0

Factor x

x(x - 2) = 0

x = 0 \:  \:  \: or \:  \:  \: x - 2 = 0

x = 0 \:  \:  \:  \: or \:  \:  \:  \: x = 2

These are the zeroes.

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

14 ) Go...

f(x) =  {x}^{3}  + 9x + 11x - 21

0 =  {x}^{3}  + 9 {x}^{2}  + 11x - 21

{x}^{3}  + 9 {x}^{2}  + 11x - 21 = 0

(x - 1)(x + 3)(x + 7) = 0

x - 1 = 0 \:  \: or \:  \: x + 3 = 0 \:  \: or \:  \: x + 7 = 0 \\

x = 1 \:  \:  \: or \:  \:  \: x =  - 3 \:  \:  \: or \:  \:  \: x =  - 7 \\

These are the zeroes.

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

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