Mathematics
Junior High
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๐ŸŸฉ็ญ”ใˆใฏๅˆใฃใฆใ„ใ‚‹ใฎใงใ™ใŒใ€้€”ไธญ่จˆ็ฎ—ใŒ่งฃ็ญ”ใจ้•ใ„ใพใ—ใŸใ€‚ๆœŸๆœซใƒ†ใ‚นใƒˆใงใฏใฉใกใ‚‰ใฎ่จˆ็ฎ—ๅผใงๆ›ธใ„ใฆใ‚‚่‰ฏใ„ใฎใงใ™ใ‹๏ผŸ
ๆจก็ฏ„่งฃ็ญ”ใฎๆ–นใŒ็ฐกๆฝ”ใงใ—ใ‚‡ใ†ใ‹๏ผŸ

ใ€็ทด็ฟ’1ใ€‘(3x+2y-z) (3x-2y+z) ใ‚’ๅฑ•้–‹ใ›ใ‚ˆใ€‚ {3x+(24-2)}{3x-(22-2)} (3x)-(2-2) 922-4g'+4y2+22 (3x+2y-z)(320-22+2) 2 (24-2)ใ‚’MใจใŠใ (ไธŽๅผ)=(3+M)(3X-M) 9xยฒ-Mยฒ =922-124-2) 9/22(4g4yz+22) 9xยฒ- 44ยฒ 442-22 2 = 2 922 9x2 9xยฒ
[1] (2x-3y+4z) (2x+3y-4z) = {2x-(3y-4z)}{2x + (3y-4z)} == = (2x)2- (3y- 4z) 2 == = 4x2 (9y2-24 y z + 16 z2) === 4xยฒ-9y+24 yz - 16 zยฒ

Answers

โœจ Best Answer โœจ

ๅ•้กŒใฎ่งฃ็ญ”ใŒ้•ใ†ๅ•้กŒๆ–‡ใฎ่งฃ็ญ”ไพ‹ใงใ™ใ€‚

ใ‚„ใ‚Šๆ–นใฏ็ฝฎใๆ›ใˆใ—ใŸๆ–นใŒใƒŸใ‚นใŒๆธ›ใ‚‹ใ‹ใจใ€‚
ๆ…ฃใ‚Œใฆใ„ใ‚‹ใชใ‚‰็ฝฎใๆ›ใˆใ—ใชใ„ๆ–นใŒๆ—ฉใ„ใงใ™ใŒใ€ใƒŸใ‚นใ—ใ‚„ใ™ใ„ใชใ‚‰็ฝฎใๆ›ใˆใง๐Ÿ™‡

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