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Aukeratu emaitza egokia (Y+5)2 = Y2+25Y+10 Y2+10Y+25 5Y2+10Y+25 10Y2-10Y-10 :
(2X+3)2= 4X+6X2+3 4X2+12X+9 4X2+12X-9 4X2-12X-9
(ax2+ab2)2 = a2x4+2a2x2b2+a2b4 a2x4+2a2x4b2+a4b2 2a2x4+2a2x2b2+4a2b4 ax2+2a2x2b2+ab4 Bete falta diren zenbakiak a) b) c) d) (X + )(X - ) = X2+X-12 (X - )(X + ) = X2-2X-15 (X - )(X + )= X2-X-6 (X - )(X + ) = X2-3X-40 Erabili honako formula (a+b)(a-b) = a2-b2 a) b) c) ( 16X2-25Y2 = ( X+ Y)( X- Y) 1-a2 = ( + )( - ) a2 - b4 4 9 ) = ( a + b2 a - b2 ) ( ) Jarri emaitza egokia kasu bakoitzean 1.) 1.) 1.) 1.) (a2+1)(4a-1) = (3ab-2)(x2+y2) = (a+b)(a+x) = (x-2y)(a-2b) = a2+ax+ab+bx ? ax-2bx-2ay+4by ? 4a3-1-a2+4a ? 3abx2-2y2-2x2+3aby2 ? 1.) 1.) 1.) 1.) (a2-1)(4a+1) = (3ab-2)(x2 _ y2) = (2a+b)(a+2x) = (x+2y)(a-2b) = 2a2+4ax+ab+2bx ? ax-2bx+2ay-4by ? 4a3-1+a2 _4a ? 3abx2-2y2-2x2+3aby2 ? Bete ezazu ( X2 + )2 ( X - Y)2 ( X - )2 ( X4+ )2 = 9X2-48X +64 = 4X2-20XY+25Y2 = 16X8+72X4 +81 = 25X4+40X2 +16 Adierazi kasu bakoitzean emaitza ondo dagoen ala ez (X+5)(X+2)= X2+7X+10 BAI EZ (m+5)(m-3) = m2+3m-10 BAI EZ (A+3)(A-1) = A2+4A+3 BAI EZ (2A+3)(2A-1) = 4A2+4A-2 BAI EZ (m+1)(m-2) = m2+3m-10 BAI EZ Bete ezazu ( X2 + )2 ( X - Y)2 ( X - )2 ( X4+ )2 = 16X2-16X +4 = 9X2-30XY+25Y2 = 25X8+90X4 +81 = 36X4+24X2 +4 |