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Answered

12. Find the value of the expression 5xy + y - 7
if x = 2, y = 3.

A. 11
B. 14
C. 7
D. 3

13. Find the value of the expression - 4 (x2 – 3)
if x = 3.

A. -4
B. O
C. 24
D. - 24

14. Add 4x2 – 2x + 5 and 7 + 5x3 + 4x2.

A. 5x3 + 3x2 + 2x + 12
B. 5x3 + 6x + 12
C. 5x3 + 2x + 12
D. 4x2 + 2x + 12

15. Subtract 4xy + 5x - 7y + 3 from xy - 6x + y + 6.

A. - 3xy + 8y + 3
B. - 11x + 8y + 3
C. - 3xy - 11x + 8y + 3
D. - 3xy - 11x + 3

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Sagot :

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Answer:

12.) C.

13.) D.

14.) D.

15.) A.

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