Use the identity (x + a) (x + b) = x2 + (a + b)x + ab to find the following products.
(i) (x + 3) (x + 7) (ii) (4x +5) (4x + 1)
(iii) (4x – 5) (4x – 1) (iv) (4x + 5) (4x – 1)
(v) (2x +5y) (2x + 3y) (vi) (2a2 +9) (2a2 + 5)
(vii) (xyz – 4) (xyz – 2)
Answers
Answered by
8
1]x²+[3+7]x+3*7
x²+10x+21
2]4x²+[5+1]4x+5
16x²+24x+5
3]4x²+[-6]4x+5
16x²-24x+5
4]4x²+[4]4x+-5
16x²+16x-5
5]2x²+[8y]2x+15y²
4x²+16xy+15y²
6][2a²]²+14*2a²+45
4a^4+28a²+45
7]xyz²+[-6]xyz+8
x²y²z²-6xyz+8
x²+10x+21
2]4x²+[5+1]4x+5
16x²+24x+5
3]4x²+[-6]4x+5
16x²-24x+5
4]4x²+[4]4x+-5
16x²+16x-5
5]2x²+[8y]2x+15y²
4x²+16xy+15y²
6][2a²]²+14*2a²+45
4a^4+28a²+45
7]xyz²+[-6]xyz+8
x²y²z²-6xyz+8
nope:
plzz mark as the best
Answered by
2
1]x²+[3+7]x+3*7
x²+10x+21
2]4x²+[5+1]4x+5
16x²+24x+5
3]4x²+[-6]4x+5
16x²-24x+5
4]4x²+[4]4x+-5
16x²+16x-5
5]2x²+[8y]2x+15y²
4x²+16xy+15y²
6][2a²]²+14*2a²+45
4a^4+28a²+45
7]xyz²+[-6]xyz+8
x²y²z²-6xyz+8
x²+10x+21
2]4x²+[5+1]4x+5
16x²+24x+5
3]4x²+[-6]4x+5
16x²-24x+5
4]4x²+[4]4x+-5
16x²+16x-5
5]2x²+[8y]2x+15y²
4x²+16xy+15y²
6][2a²]²+14*2a²+45
4a^4+28a²+45
7]xyz²+[-6]xyz+8
x²y²z²-6xyz+8
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