1.

VEL-516.The value of 81a2 +9b2 +54ab, if a=-2, b=-4 isガ9002) 8003) 7004) 600

Answer»

a=-2 b=-481a^2+9b^2+54ab=81(-2)^2+9(-4)^2+54(-2)(-4)=81*4+9*16+54*8=324+144+432=900option 1



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