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Sagot :
(2x + 5y) + (3x – 2y)
= 2x + 5y + 3x – 2y
= 2x + 3x + 5y – 2y
= 5x + 3y
(x3 + 3x2 + 5x – 4) – (3x3 – 8x2 – 5x + 6)
= (x3 + 3x2 + 5x – 4) – 1(3x3 – 8x2 – 5x + 6)
= (x3 + 3x2 + 5x – 4) – 1(3x3) – 1 (–8x2) – 1(–5x) – 1(6)
= x3 + 3x2 + 5x – 4 – 3x3 + 8x2 + 5x – 6
= x3 – 3x3 + 3x2 + 8x2 + 5x + 5x – 4 – 6
= –2x3 + 11x2 + 10x –10
= 2x + 5y + 3x – 2y
= 2x + 3x + 5y – 2y
= 5x + 3y
(x3 + 3x2 + 5x – 4) – (3x3 – 8x2 – 5x + 6)
= (x3 + 3x2 + 5x – 4) – 1(3x3 – 8x2 – 5x + 6)
= (x3 + 3x2 + 5x – 4) – 1(3x3) – 1 (–8x2) – 1(–5x) – 1(6)
= x3 + 3x2 + 5x – 4 – 3x3 + 8x2 + 5x – 6
= x3 – 3x3 + 3x2 + 8x2 + 5x + 5x – 4 – 6
= –2x3 + 11x2 + 10x –10
Subtraction Rule
To subtract an expression from another expression, add it's negative. That is,
a - b = a + (-b).
ex.
(5x + 4) - (7x +2)
(5x + 4) + (7x - 2)
(5x - 7x) + (4 - 2)
= -2x+2
HOPE IT HELPS
- KAI (;
To subtract an expression from another expression, add it's negative. That is,
a - b = a + (-b).
ex.
(5x + 4) - (7x +2)
(5x + 4) + (7x - 2)
(5x - 7x) + (4 - 2)
= -2x+2
HOPE IT HELPS
- KAI (;
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