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JOROSDELACRUZ113IN
Answered

Pre-test
Choose the letter of the correct answer. Write the chosen letter on a separate sheet of paper.
1. If x= 5 and y = -2, what is the value of x2 + 3y?
A. -31
B-19
C. 19
D. 31
2. Evaluate 2x2 -5x + 10 if x = 4.
A. -22
B-6
C. 6
D. 22
ER 2 WEEK 4​

Sagot :

JANSALVATERAIN

Answer:

1.) C. 19

2.) D. 22

Step-by-step explanation:

1)

[tex] = ( - 5) {}^{2} + 3( - 2) \\ = 25 + ( - 6) \\ = 19[/tex]

2)

[tex] = 2(4) {}^{2} - 5(4) + 10 \\ = 2(16) - 20 + 10 \\ = 32 - 20 + 10 \\ = 42 - 20 \\ = 22[/tex]

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