Question

b) 4x² - 5x + 9 from 7x²+x-3​

Answer 1

Step-by-step explanation:

7x²+x-3-4x²-5x+9

now we should arrange for the like terms

7x²-4x²+x-5x-3+9

+3x²-4x+3

Answer 2

♣ Qᴜᴇꜱᴛɪᴏɴ :

Subtract :  4x² - 5x + 9 from 7x²+x-3​

♣ ᴀɴꜱᴡᴇʀ :

3x² + 6x - 12

♣ ᴄᴀʟᴄᴜʟᴀᴛɪᴏɴꜱ :

(7x²+x-3​) - (4x² - 5x + 9)

Distribute the negative sign (-) to 4x² - 5x + 9

= 7x²+x-3​ - 4x² + 5x - 9

Combine like terms

= 7x²+x-3​ - 4x² + 5x - 9

= 3x² + 6x - 12