Bonjour,
32)
a. 4 + (x - 3) * 5
= 4 + 5x- 15
= 5x - 11
b. 2x (x + 1) - x
= 2x² + 2x - x
= 2x² + x
c. - (4 - x) * 2
= - (8 - 2x)
= - 8 + 2x
= 2x - 8
d. 3 * (5x * 2) + 4
= 15x + 6 + 4
= 15x + 10
e. 3 * x + x * 2x + 3 * 4 + 2x * 4
= 3x + 2x² + 12 + 8x
= 2x² + 11x + 12
1)
a. 2x = 2 * - 2 = - 4
b. 7 + 5x = 7 + 5 * - 2 = 7 - 10 = - 3
c. x² = - 2² = 4
d. - x² = - (- 2)² = - 4
e. x³ = - 2³ = - 8
f. 4 - x = 4 - (- 2) = 4 + 2 = 6
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Bonjour,
32)
a. 4 + (x - 3) * 5
= 4 + 5x- 15
= 5x - 11
b. 2x (x + 1) - x
= 2x² + 2x - x
= 2x² + x
c. - (4 - x) * 2
= - (8 - 2x)
= - 8 + 2x
= 2x - 8
d. 3 * (5x * 2) + 4
= 15x + 6 + 4
= 15x + 10
e. 3 * x + x * 2x + 3 * 4 + 2x * 4
= 3x + 2x² + 12 + 8x
= 2x² + 11x + 12
1)
a. 2x = 2 * - 2 = - 4
b. 7 + 5x = 7 + 5 * - 2 = 7 - 10 = - 3
c. x² = - 2² = 4
d. - x² = - (- 2)² = - 4
e. x³ = - 2³ = - 8
f. 4 - x = 4 - (- 2) = 4 + 2 = 6