Przekształć stosując wzory skróconego mnożenia
1. (2x+5)^2 =
2. (3x-1)^2 =
3. 100x^2 - 16 =
4. (2x+3)^3 =
5. (x-2)^3 =
1. ( 2 x + 5 )^2 = (2x)^2 +2*2x*5 + 5^2 = 4 x^2 + 20 x + 25
2. ( 3x - 1)^2 = 9 x^2 - 6 x + 1
3. 100 x^2 - 16 = (10 x)^2 - 4^2 = ( 10 x - 4)*(10 x + 4)
4. ( 2x + 3)^3 = ( 2x)^3 + 3*(2x)^2 *3 + 3*2x*3^2 + 3^3 =
= 8 x^3 + 36 x^2 + 54 x + 27
5. ( x - 2)^3 = x^3 - 3*x^2 * 2 + 3*x*2^2 - 2^3 = x^3 - 6 x^2 + 12 x - 8
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1. ( 2 x + 5 )^2 = (2x)^2 +2*2x*5 + 5^2 = 4 x^2 + 20 x + 25
2. ( 3x - 1)^2 = 9 x^2 - 6 x + 1
3. 100 x^2 - 16 = (10 x)^2 - 4^2 = ( 10 x - 4)*(10 x + 4)
4. ( 2x + 3)^3 = ( 2x)^3 + 3*(2x)^2 *3 + 3*2x*3^2 + 3^3 =
= 8 x^3 + 36 x^2 + 54 x + 27
5. ( x - 2)^3 = x^3 - 3*x^2 * 2 + 3*x*2^2 - 2^3 = x^3 - 6 x^2 + 12 x - 8