Sagot :
[tex]\large{\mathcal{SOLUTION:}}[/tex]
Substitute the value of x which is 3 to the equation:
- y = -5x³-2x²-9x+20
- y = -5(-3)³-2(-3)²-9(-3)+20
- y = -5(-27)-2(9)+27+20
- y = 135-18+27+20
- y = 117-47
- y = 70
Therefore , the value of y is 70
[tex] \\ [/tex]
[tex]\large{\mathcal{ANSWER:}}[/tex]
- y = 70
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