1) (m + n) . (m – n)= m² – mn + mn – n²= m² – n²
2) (p – q) . (p + q)= p² + pq – pq – q²= p² + pq – pq – q²
3) (c + d) . (c – d)= c² – cd + cd – d²= c² – d²
4) (a – b) . (b + a)= ab + a² – b² – ab= a² – b²
5) (x +1) . (x – 1)= x² – x + x – 1= x² – 1
6) (a + 2) . (2 – a)= 2a – a² + 4 – 2a= a² + 4
7) (2a + b) . (2a – b)= 4a – 2ab + 2ab – b²= 4a – b²
8) (5x + y) . (y – 5x)= 5xy – 25x + y² – 5xy= 25x + y²
9) (2m – 3n) . (3n + 2m)= 6mn + 4m² – 9n² – 6mn= 4m² – 9n²
1) (x + 2) . (x – 3)= x² – 3x + 2x – 6= x² – x – 6
2) (5x + 1) . (2x + 4)= 10x² + 20x + 2x + 5= 10x² + 22x + 5
3) (3b + 2) . (4 – b)= 12b – 3b² + 8 – 2b= 10b – 3b² + 8
4) (2y – 5) . (4y – 3)= 8y² – 6y – 20y + 15= 8y² – 26y + 15
5) (3a + 4) . (2a – 3)= 6a² – 9a + 8a – 12= 6a² – a – 12
6) (7z – 3) . (5z – 2)= 35z² – 14z – 15z + 6= 35z² + z + 6= 35z² + 7
7) (2 – 4x) . (1 – 3x)= 2 – 6x + 4x + 12x²= 2 – 2x + 12x²
8) (3 – 2x) . (5x + 1)= 15x + 3 – 10x² – 2x= 13x + 3 – 10x²
9) (4b – 5c) . (3b + 4c)= 12b² + 16bc – 15bc – 20c²= 12b² + bc – 20c²
1) (a³)²= a^6
2) (x²)^4= x^8
3) (-y^4)³=-y^12
4) (-x^5)^4= -x^20
5) (-c^8)^5= -c^40
6) (-x³)^7= -x^21
7) (-y^15)³= -y^45
8) (b^6)²= b^12
9) (z3)^n= z³^n
10) (y^4)^5= y^20
1) (m + n)²= (m + n) . (m + n)= m² + mn + mn + n²
2) (p – q)²= (p – q) . (p – q)= p² – qp – qp + q²
3) (c – d)²= (c – d) . (c – d)= c² – cd – cd + d²
4) (2 + a)²= (2 + a) . (2 + a)= 4 + 2a + 2a + a²
5) (3 – b)²= (3 – b) . (3 – b)= 9 – 3b – 3b + b²
Բարի Գալուստ Հրաչ Հակոբյանի Բլոգ 