Expand each of the following, using suitable identities: [3 MARKS]

1.	Expand each of the following, using suitable identities: [3 MARKS] 1)(x+2y+4z)2 2)(3x−7y−z)2
Answer» Expand each of the following, using suitable identities: [3 MARKS] $1) {(x + 2 y + 4 z)}^{2}$ $2) {(3 x - 7 y - z)}^{2}$

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