Question

Evaluate the following.
a) 2x + y + 4 for x = 6 and y = 4.
c) - 3abc-3 for a = 1, b = 2 and c = 3
b) 8x2 + 5xy - y for x = 3 and y = 2
d) 9x2 + 3x + 2 + 4 for x = 5
please give your answer with full explanation, I will mark the correct answer brainliest​

Answer 1

Answer:

a) 2x + y + 4 for x = 6 and y = 4

2x + y + 4

= 2×6 + 4 + 4

= 12 + 4 + 4

= 20

c) - 3abc-3 for a = 1, b = 2 and c = 3

- 3abc-3

= - 3×1×2×3 - 3

= - 18 - 3

= - 21

b) 8x^2 + 5xy - y for x = 3 and y = 2

8x^2 + 5xy - y

= 8× 3^2 + 5×3×2 - 2

= 72 + 30 - 2

= 100

d) 9x^2 + 3x + 2 + 4 for x = 5

9x^2 + 3x + 2 + 4

= 9×5^2 +3×5 + 6

= 225 + 15 +6

= 246

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Answer 2

$\huge\underline\mathbb{\red S\pink {O}\purple {L} \blue {UT} \orange {I}\green {ON :}}$

1. 12+4+4=12+8=20
2. -3×1×2×3-3=-18-3=-21
3. 8×3×3+5×3×2-2=72+15-2=85
4. 9×5×5 + 3×5 + 6 = 225+15+6=256

$\huge\underline\mathbb{\red F\pink {O}\purple {L} \blue {LO} \orange {W}\green {ME}}$