Question

ᴀɴꜱᴡᴇʀ ᴛʜɪꜱ ꜰᴀꜱᴛ .............

ɴᴏ ꜱᴘᴀᴍ............❌​

Answer 1

Answer:

(i) (a+b)(a-b) = a² - b²

(x+7)(x-7)= x² - 49

(ii) (3x+1)(3x-8)= (3x)² + (-8+1)3x+ (-8*1)= 9x²-21x-8

Answer 2

Step-by-step explanation:

1) (x+7)(x+7)

= x(x+7) + 7(x+7) distributive property

= x²+7x + 7x +49

= x²+14x+49

2) (3x+1)(3x-8)

= 3x(3x-8) + 1(3x-8) distributive property

= 9x²-72x+3x-8 = 9x²-69x-8