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natali 33 [55]
3 years ago
15

Evaluate 3x^2+5, when x= -5 and y= -9

Mathematics
1 answer:
dangina [55]3 years ago
3 0

Step-by-step explanation:

3x {}^{2}  + 5

(3 \times  - 5) {}^{2}  + 5

- 15 {}^{2}  + 5

225 + 5

230

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3 years ago
Factor the following equations to find the zeros of the equation.
irina1246 [14]

The zeroes of the equation are (1,4)

Step-by-step explanation:

Given equation is:

y = x^2 - 5x + 4

We have to put y=0 in the equation to find zeroes of the equation

x^2-5x+4 = 0\\x^2 - 4x- x +4 = 0\\x(x-4)-1(x-4) = 0\\(x-4)(x-1) = 0\\x - 4 =0 => x = 4\\x-1 = 0 => x = 1

Hence,

The zeroes of the equation are (1,4)

Keywords: Equation, zeroes of an equation

Learn more about zeroes of equation at:

  • brainly.com/question/4168505
  • brainly.com/question/4228574

#LearnwithBrainly

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Step-by-step explanation:

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Step-by-step explanation:

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