معرکه بزن👑📿
سوال یک)
(4x)² + 2(4x) (y) + (y)²
= 16x² + 8xy + y²
(xy)² + (-5 +1) x + (1) (-5)
= x²y² - 4x - 5
(x)² + (-3)²
= x² - 9
سوال دو)
(2x - 1) (2x + 1)
(x - 6) (x - 6)
سوال سه)
3x - 6 ≥ 4x + 1
3x - 4x ≥ 6 + 1
- x ≥ 7
x ≤ 7
سوال چهار)
2 (- 3x + 4x² + 1) - (1 - x + x²)
= - 6x + 8x² + 2 - 1 + x - x²
= - 5x + 7x² + 1
= 7x² - 5x + 1
سوال پنج)
99 × 101 = (100 - 1) (100 + 1) = (100)² - (1)²
= 10000 - 1 = 9999