factorize 12 (a^2+3a)^2 - 8 (a^2+3a) (2a+1)-15 (2a+1)^2 , please plzzzzzzz fasttttt... I have maths exam tomorrow, please understand.... I'm ready to give u 1000000000000 thanks and brainliest, pleasee........... faaasssttt....
Unnati1230:
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get : x 2 + 1 = Ax(x – 1)2 + Bx(x – 1) + C x + D(x – 1)3 I
The two zeroing numbers are x = 1 and x = 0: sox = 1: 1 + 1 = 0 + 0 + C + 0, so C = 2
x = 0: 1 = 0 + 0 + 0 – D, so D = –1
The particular x-values I choose aren't important, so I'll pick smallish ones:x = 2: (2)2 + 1 = A(2)(2 – 1)2 + B(2)(2 – 1) + (2)(2) + (–1)(2 – 1)3
4 + 1 = 2A + 2B + 4 – 1
5 = 2A + 2B + 3
1 = A + Bx = –1:(–1)2 + 1 = A(–1)(–1 – 1)2 + B(–1)(–1 – 1) + (2)(–1) + (–1)(–1 – 1)3
1 + 1 = –4A + 2B – 2 + 8
2 = –4A + 2B + 6
2A – B = 2......
Please mark it as brainiest answer ..............
The two zeroing numbers are x = 1 and x = 0: sox = 1: 1 + 1 = 0 + 0 + C + 0, so C = 2
x = 0: 1 = 0 + 0 + 0 – D, so D = –1
The particular x-values I choose aren't important, so I'll pick smallish ones:x = 2: (2)2 + 1 = A(2)(2 – 1)2 + B(2)(2 – 1) + (2)(2) + (–1)(2 – 1)3
4 + 1 = 2A + 2B + 4 – 1
5 = 2A + 2B + 3
1 = A + Bx = –1:(–1)2 + 1 = A(–1)(–1 – 1)2 + B(–1)(–1 – 1) + (2)(–1) + (–1)(–1 – 1)3
1 + 1 = –4A + 2B – 2 + 8
2 = –4A + 2B + 6
2A – B = 2......
Please mark it as brainiest answer ..............
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