Question

(10 a + 2)²= ||12³y²-810²= |(2c-9/6)= (5a-4) ² = 22.500²- 49y² = (2x +91)²= (8x+9y² 36a²-2.56y^= (Ma-gb)= на-дв 2 (fa+11) ²= 25a²-64y²= (40+71α)² = (9x-2y)² = 100 a² - 196b² = 2 (429-4 X-7​

Answer 1

Răspuns:

Explicație pas cu pas:

(10a+2)² = 100a²+40a+4

(5a-7)² = 25a²-70a+49

(8x+9y)² = 64x²+144xy+81y²

(7a+11)² = 49a²+154a+121

(9x-2y)²= 81x²-36xy+4y²

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121y²-81a⁴ = (11y-9a²)(11y+9a²)

225x²-49y² = (15x-7y)(15x+7y)

36a²-256y² = (6a-16y)(6a+16y)

25a²-64y² = (5a-8y)(5a+8y)

100a²-196b² = (10a-14b)(10a+14b)

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(2c-9b)² = 4c²-36bc+81b²

(12x+9)² = 144x²+216x+81

(11a-9b)² = 121a²-198ab+81b²

(4c+7d)² = 16c²+56cd+49d²

(7x-7)² = 49x²-98x+49

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Trebuie sa inveti formulele aplicate mai sus:

(a+b)² = a²+2ab+b²

(a-b)² = a²-2ab+b²

a²-b² = (a-b)(a+b)